Recent questions and answers in Circles

If the area of the shaded region is $K \pi$, what is the value of K

answered Dec 8, 2020 by jrnayak007

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 $\angle{DFE}$ = ________

answered May 16, 2020 by pady_1

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A circle with centre $'O'$ lies on the point $(3, -6)$ and has centre $(0,0)$. What can be its radius ?

answered Jan 11, 2020 by priyanka.clay6

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The circumference of a circle is $60\;cm$. An arc subtends $90^{\circ}$ at the centre. Find its length.

answered Jan 9, 2020 by priyanka.clay6

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In the circle given below $\angle{PQR}=100^{\circ}$, where $P, Q$ and $R$ are points on a circle with centre $O.$ Then $\angle{OPR}=$

answered Jan 8, 2020 by priyanka.clay6

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The centre 'O' of a circle of radius 5. If $PT$ is the tangent to the circle, whose length is $12$. What is the length of $OP$ ?

answered Jan 8, 2020 by priyanka.clay6

1 answer

A circle with centre $O(-3,-4)$ has a radius of 13 units. Which of the following can be its equation

answered Jan 7, 2020 by priyanka.clay6

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The centre $'O'$ of a circle of radius $5$. If $PT$ is the tangent to the circle, whose length is 12. What is the length of $OP$?

asked Jan 6, 2020 by priyanka.clay6

0 answers

In the figure given below, $\angle{APB}=75^{\circ}$ and $AP,BP$ are equal tangents. Find $x^{\circ}$

answered Jan 3, 2020 by priyanka.clay6

1 answer

$O$ is the centre of the circle. Find $x$.

answered Dec 22, 2019 by priyanka.clay6

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The length of the minute hand of a clock is $21\;cm.$ What will be the area swept by the minute hand in 5 minutes ?

answered Dec 19, 2019 by priyanka.clay6

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Points A and B lie on a circle with radius 1 and arc $\widehat{AB}$ has length $\large\frac{\pi}{3}.$ What fraction of the circumference of the circle is the length of arc $\widehat{AB}$.

answered Dec 17, 2019 by priyanka.clay6

1 answer

Given three non-collinear points, the number of circles which can be drawn through these points

answered Dec 16, 2019 by priyanka.clay6

1 answer

In the figure below the small circle is inscribed in a square, which is inscribed in the large circle. What is the ratio of the area of the large circle to that of the small circle.

answered Dec 12, 2019 by priyanka.clay6

1 answer

One chord of a circle is known to be 10 cm. The radius of this circle must be

answered Dec 12, 2019 by priyanka.clay6

1 answer

answered Dec 7, 2019 by priyanka.clay6

1 answer

A garden roller has a circumference 4m. The number of revolutions it makes in moving 40 m is

answered Dec 6, 2019 by priyanka.clay6

1 answer

4 identical momento is made by a school to award 4 students for four values - Honesty, Punctuality, Cleanliness and Non-Violence. The shape of the momento is as shown in the figure. The base PQRS is silver plated from the front side at the rate of $\$10\; per \;cm^2$. What is the total cost of the silver plating ? (Take $\pi=\frac{22}{7}$)

answered Dec 6, 2019 by priyanka.clay6

1 answer

The equation of the circle passing through the point $(2,-4)$ and has a centre at $(0,0)$ is

answered Dec 4, 2019 by priyanka.clay6

1 answer

answered Dec 4, 2019 by priyanka.clay6

1 answer

In the figure shown below TP and TQ are tangents to the circle with centre O and radius $5 \;cm$. If $\angle{QTP}=65^{\circ}$, calculate $\angle{POQ}$

answered Dec 4, 2019 by priyanka.clay6

1 answer

In the figure shown below, $PQ$ is the tangent to the circle whose centre is $O$ and radius is $5$. If $OP = 13$, find the length of $PQ$, if $T$ is the midpoint of $PQ$

answered Dec 2, 2019 by priyanka.clay6

1 answer

In the fig. $\angle{PQR} = 100^{\circ}$ where $P, Q $ and $R $ are points on the circle with center $O$. Find $\angle{OPR}$

answered Nov 28, 2019 by priyanka.clay6

1 answer

Two circles o radii 5 cm and 3 cm and centres A and B touch internally. If the perpendicular bisector of segment AB meets the bigger circle in P and Q. Find the length of PQ.

answered Nov 28, 2019 by priyanka.clay6

1 answer

If the circumference of a circle and the perimeter of a square are equal, then

answered Nov 26, 2019 by priyanka.clay6

1 answer

In the figure given below two circles of radii 4 cm each is as shown. PQRS is a rectangle and PQ and RS are the radii. What is the area of the shaded area ?

answered Nov 25, 2019 by priyanka.clay6

1 answer

A sphere is just enclosed inside a cube of volume $24 cm^3$. Find the volume of the sphere.

answered Nov 23, 2019 by priyanka.clay6

1 answer

The radii of two circles are 4 cm and 3 cm respectively. Find the radius of a circle having area equal to the sum of the areas of the circle.

answered Nov 23, 2019 by priyanka.clay6

1 answer

If O is center of a circle and AO and OB are radius of the circle, and AP and PB are tangents, then what is the angle $\angle{AOB}$ ?

answered Nov 23, 2019 by priyanka.clay6

1 answer

The circle shown in the figure has an area 20. BC is tangent to the circle with centre A at point B. If $AC = 2AB$, then what is the area of the shaded region ?

answered Nov 18, 2019 by priyanka.clay6

1 answer

answered Nov 17, 2019 by priyanka.clay6

1 answer

If a sector of a circle has arc length of $2\pi$ inches and an area of $6\pi$ sq. inches, what is the length of the radius of the circle ?

answered Nov 17, 2019 by priyanka.clay6

1 answer

The following equation represents different curves.

answered Nov 15, 2019 by meena.clay6

1 answer

The following equation represents different curves. $(a)\; x+4y =9 \qquad (b) y^2 = 8(x+3) \qquad (c)\; x^2+y^2 + 2x+3y+8=0$ The coordinates of the x-intercept which lies on the curve (b) is

answered May 28, 2019 by meena.clay6

1 answer

The following equations represents different curves. $(a)\; x+4y =9 \qquad (b) y^2 = 8(x+3) \qquad (c)\; x^2+y^2 + 2x+3y+8=0$ equation (a) represents

answered May 28, 2019 by meena.clay6

1 answer

Which of the following equation is not that of the circle whose center is $(-4, -6)$ and radius $6$ ?

answered May 22, 2019 by meena.clay6

1 answer

If the area of the shaded region is $K \pi$ and radius of circle is 3 units, what is the value of K ?

answered May 22, 2019 by meena.clay6

1 answer

A rectangle whose length is 10 units and width is inscribed in a circle. What is the radius of the circle ?

answered Apr 30, 2019 by priyanka.clay6

1 answer

In the figure $PT$ and $QT$ are the equal tangents of the circle with center $O$. The length $OT$ is twice that of the radius. What is the length of the tangents if the radius is 5 units ?

answered Apr 29, 2019 by priyanka.clay6

1 answer

Which of the following equation is not that of the circle whose center is $(-4, -6)$ and radius $6$ ?

answered Apr 29, 2019 by priyanka.clay6

1 answer

In the figure given below $PT$ and $PQ$ are targets to the circle with centre $o$. Which of the following is equal to $z^{\circ}$ ?

answered Apr 28, 2019 by priyanka.clay6

1 answer

In the figure below $P$ and $Q$ are the centres of the circle and $PQ =9 $. What is the area of the shaded region ?

answered Apr 28, 2019 by priyanka.clay6

1 answer

What is the area in square inches of a circle with diameter $5 \pi^2$ inches ?

answered Apr 27, 2019 by priyanka.clay6

1 answer

The circumference of a circle is $a \pi \; units$ and the area of the circle is $x \pi$ sq. units. If $a=x$, then what is the radius of circle ?

answered Apr 25, 2019 by priyanka.clay6

1 answer

O is the center of a circle of radius 9 cm. A point P at a distance of 41 cm from O. The length of the tangent segment from P to the circle is _________

answered Apr 7, 2019 by priyanka.clay6

1 answer

$(x+3)^2 + (y-2)^2 = 25$ is the equation of a circle, the centre of the circle lies in

answered Apr 5, 2019 by priyanka.clay6

1 answer

The following equations represents different curves. $(a)\; x+4y =9 \qquad (b)\; y^2 = 8(x+3) \qquad (c)\; x^2+y^2 + 2x+3y+8=0$ Question : The coordinates of the point which lies on the curve $(b)$ is

answered Apr 5, 2019 by priyanka.clay6

1 answer

Equation of a circle is given by $x^2 + y^2-8x + 4y+5=0$. The centre and radius of the above circle is

answered Mar 31, 2019 by priyanka.clay6

1 answer

Which of the following is an equations of a circle in the $xy$ plane with center(0,3) and a radius of 6 units ?

answered Mar 29, 2019 by meena.clay6

1 answer

A circle has a radius of 4 cm . What is the difference between its area and circumference ?

answered Mar 26, 2019 by meena.clay6

1 answer

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