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Questions asked by priyanka.c
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2867
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In the figure $AP$ is a tangent to the circle with centre $O$ such that $OP= 4\;cm$ and $\angle {OPA} = 30^{\circ}$. Then AP
sat
math
circles
asked
Dec 15, 2018
1
answer
If PA and PB are tangents from outside point P such that PA = 10 cm and $\angle{APB}= 60^{\circ}$. Find the length of chord AB.<br>
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math
circles
asked
Dec 6, 2018
1
answer
In the given figure chords AB and CD of a circle intersect at $P$. If $AB$ = 5 cm, $PB$ = 3cm and $PD$= 4cm, then find the length of $CD$.<BR>
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math
circles
asked
Dec 6, 2018
1
answer
Find the area of the unshaded region in the figure if $ABCD$ is a square of side 14 cm and $APD$ and $BPC$ are semi circle <br>
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math
circles
asked
Dec 5, 2018
1
answer
If the perimeter of a semi-circular protractor is 108 cm, find the diameter of the protractor.
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math
circles
asked
Dec 5, 2018
0
answers
If the perimeter of a semi-circular protractor is 108 cm, find the diameter of the protractor.
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math
circles
asked
Dec 5, 2018
1
answer
The chord of a circle is equal to its radius. The angle subtended by this chord at the minor arc of the circle is
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math
circles
asked
Dec 5, 2018
1
answer
In the figure below two equal circles touch each other at $T$, if $QP = 4.5\;cm$, then $QR$= ________
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math
circles
asked
Dec 5, 2018
1
answer
In the figure $O$ is the centre of a circle of radius 5 cm. T is a point such that OT = 13 cm and OT intersects the circle at E. If AB is the tangent to the circle at E, then the length of AB is _________
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math
circles
asked
Dec 5, 2018
1
answer
The incircle of a $\Delta ABC$, touches the side $BC$, $CA$ and $AB$ at $D, E$ and $F$ respectively. If $AF + BD + CE = AE + BF + CD +$ __________ perimeter of $\Delta ABC$
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math
circles
asked
Dec 5, 2018
1
answer
ABCD is a quadrilateral such that $\angle D = 90^{\circ}$. A circle $(O,r)$ touches the sides $AB, \; BC,\; CD$ and $DA$ at $PQR$ and $S$ respectively. If $BC = 38\; cm, \; CD = 25\;cm$ and $BP = 27\;cm$ then $r$ = __________
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math
circles
asked
Dec 5, 2018
1
answer
PQ is a chord of length 8 cm of a circle of radius 5 cm. The tangent at $P$ and $Q$ intersect at a point $T$. The length of $TP$ is _________
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math
circles
asked
Dec 5, 2018
1
answer
$d$ and $m$ are the parallel tangent at $A$ and $B$. The tangent at $C$ makes an intercept $DE$ between $d$ and $m$. Hence $\angle{DFE}$ = ________
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math
circles
asked
Dec 5, 2018
1
answer
If an isosceles triangle $ABC$ in which $AB = AC$ = 6 cm is inscribed in a circle of radius 9 cm, then the area of the triangle $ABC$ is _______
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math
circles
asked
Dec 5, 2018
1
answer
In the figure below, $BC$ is a tangent to the circle with centre $O$. $OE$ bisects $AP$. Then $\Delta$AEO is _________ $\Delta$ABC
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math
circles
asked
Dec 5, 2018
1
answer
$CP$ and $CQ$ are tangent from an external point $C$ to a circle with centre $O$. $AB$ is another tangent which touches the circle at $R$. If $CP = 11 \;cm$ and $BR = 4\;cm$, then the length of $BC$ is _________
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math
circles
asked
Dec 5, 2018
1
answer
The perimeter of the $\Delta ABC$ in the adjacent figure is __________
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math
circles
asked
Dec 5, 2018
1
answer
If the perimeter of a circle is equal to that of a square, then the ratio of their area is
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math
circles
asked
Dec 4, 2018
1
answer
Area of the largest circle that can be inscribed in a semicircle of radius $'r'$ units is
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math
circles
asked
Dec 4, 2018
1
answer
If the difference between the circumference and radius of a circle is $37\;m$, then the circumference of the circle is given by
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math
circles
asked
Dec 4, 2018
1
answer
If the area of a circle is equal to the area of a square, then the ratio of their perimeters is
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math
circles
asked
Dec 4, 2018
1
answer
Jerry bought a pizza of diameter of 12". A sector of the pizza was cut which had a surface area of $4.5 \pi$. The angle of the cut sector was
sat
math
circles
asked
Dec 4, 2018
1
answer
Two concentric circles have circumference $4\pi$ and $10 \pi$. What is the difference of the radii of two circles ?
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math
circles
asked
Dec 4, 2018
0
answers
Two concentric circles have circumference $4\pi$ and $10 \pi$. What is the difference of the radii of two circles ?
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math
circles
asked
Dec 4, 2018
1
answer
A car tyre has a radius of 18 inches. It makes 200 revolutions. How far has the car travelled in feet ?
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math
circles
asked
Dec 4, 2018
1
answer
The coordinates of the center of a circle is $(3,5)$. A point on the circle's circumference is $(8,10)$. What is the circumference of the circle ?
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math
circles
asked
Dec 4, 2018
1
answer
Jane wants to fence garden which is in the shape as shown below. What would be the the length of the fencing material needed to fence ? The length of the rectangular side is $15 \;ft$ and width $7\; ft$. <br>
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math
circles
asked
Dec 4, 2018
1
answer
If the diameter of a circle increases by $50\%$ , by what percentage the area of the circle increase ?
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math
circles
asked
Dec 4, 2018
1
answer
If the minute hand of a clock moves $30^{\circ}$ , how many minutes of time have passed ?
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math
circles
asked
Dec 4, 2018
1
answer
A square has an area of $49 \;in^2$. If the side of the square is the same as the diameter of the circle, what is the area of the circle ?
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math
circles
asked
Dec 3, 2018
1
answer
If the radius of a circle is doubled and the new area is $154 \pi$, then what was the diameter of the original circle ?
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math
circles
asked
Dec 3, 2018
1
answer
In the diagram given below, the circle with centre $A$ has an area of $154 \; sq. unit$. What is the area with centre $B$? <br>
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math
circles
asked
Dec 3, 2018
1
answer
The radius of circle $X$ is three times the radius of circle $Y$, what will the ratio of area of circle $X$ to that of circle $Y$ ?
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math
circles
asked
Nov 20, 2018
1
answer
The diameter of a circle is increased by 100. If its original area was $25 \pi$, what is its new area ?
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math
circles
asked
Nov 20, 2018
1
answer
A circle has a circumference of $10 \pi$. Find its area.
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math
circles
asked
Nov 20, 2018
1
answer
In the diagram below, if the circle is of radius 3 inches and $AP = PB = 4$, then the area of the shaded region is
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math
circles
asked
Nov 20, 2018
1
answer
Two congruent circles overlap on a plane. The radius of both circles is 2. The region in which they overlap has an area of $\pi$. What is the total area of the two overlapping circles ?
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math
circles
asked
Nov 12, 2018
1
answer
The diameter of a circle whose circumference is area $7 \pi$ is
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math
circles
asked
Nov 12, 2018
1
answer
Area of the circle is $22 \; \pi$, what can be the closest value to the area of the square ? <BR>
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math
circles
asked
Nov 12, 2018
1
answer
If the area of the sector is $3 \pi \; sq. feet$. Whose central angle is $30^{\circ}$. What is the perimeter of the sector ?
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math
circles
asked
Nov 12, 2018
1
answer
The diagram shows a plot of land. The cost of summer up keep is $ \$ 3.00$ per square foot. What is the total up keep for the summer ? <br> <br> BC = CD = DE <br> AF = 30 feet
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math
circles
asked
Nov 12, 2018
1
answer
Two chords of a circle $\overline{PQ}$ and $\overline{RS}$ intersect at a point $O$. $\overline{PQ}$ is thrice as long as $\overline{RS}$. If $QO = 20$ and $RO = 10$, find the length of $\overline{PO}$.
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math
circles
asked
Nov 12, 2018
1
answer
<br> $AB$ is a chord in a circle whose centre is $'O'$. The radius of the circle is 8 cm. The distance of the chord from its centre is 6 cm. Then the length of the chord is
sat
math
circles
asked
Oct 16, 2018
1
answer
The circumference of a circle whose radius is $\pi$ is
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math
circles
asked
Oct 16, 2018
1
answer
In the circle given below with centre o, the angle A is $\frac{\pi}{4}$, what is the length of arc A ? <br>
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math
circles
asked
Oct 16, 2018
1
answer
A diameter of $AB$ of the circle is perpendicular to the chord $CD$ at a point X. Given $CD$ = 30 and $AX$= 5, find the diameter AB.
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math
circles
asked
Oct 16, 2018
1
answer
Given below is a circle with centre $O$, where $OD = 5, \; AD = 4,$ what is the area formed by $BOC$. <BR>
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math
circles
asked
Oct 16, 2018
1
answer
A circular 6 sliced pizza is placed in a square be $x$ that has dimensions 3 inches larger than the diameter of the pizza. If the box covers a surface area of $400\; in^2$, what is the surface area of one slice of pizza ?
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math
circles
asked
Oct 16, 2018
1
answer
Two circular cakes are made of same dimensions. Cake 1 is cut into pieces at $45^{\circ}$ and Cake 2 is cut at $60^{\circ}$. They are sold by the piece, the first for $\$$2.00 per piece and the second for $\$$2.50 per piece. What is the difference in the total revenue between the two cakes ?
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math
circles
asked
Oct 16, 2018
1
answer
What will be the measure of the angle between the minute hand and the hour hand in a clock at 9:35 pm ?
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math
circles
asked
Oct 16, 2018
1
answer
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