Recent questions tagged ch-7

Area of a rectangle with length $4ab$ and breadth $6b^2 $ is

asked May 29, 2015 by meena.p

1 answer

Product of the following monomia is $4p,-7q^3 \times -7pq$ is

asked May 29, 2015 by meena.p

1 answer

Sum of $a-b+ab,b+c-bc$ and $c-a-ac$ is

asked May 29, 2015 by meena.p

1 answer

If we subtract $-3x^2y^2 $ from $x^2y^2$ then we get,

asked May 29, 2015 by meena.p

1 answer

Evaluate $8x+7$ given that $x-3=10$

asked May 29, 2015 by meena.p

1 answer

Evaluate $3x^3 -4y^4 $ for $x=-1; y=-2$

asked May 29, 2015 by meena.p

1 answer

Find the value of $49x^2+36y^2+84xy$ when $x=3;y=6$

asked May 29, 2015 by meena.p

1 answer

Expand $\bigg(\large\frac{x}{6}-\frac{y}{5}\bigg)^2$

asked May 29, 2015 by meena.p

1 answer

Solve : $(\sqrt 3 x -2y)^2$

asked May 29, 2015 by meena.p

1 answer

Solve : $(7x-4x^2+2x^3-5)$ by $(3x-2)$

asked May 29, 2015 by meena.p

1 answer

What must be added to $y^2+5y-6$ to get $y^3-y^2+3y-2$

asked May 21, 2015 by meena.p

1 answer

What must be added to $x^3+3x-8$ to get $3x^3+x^2+6$

asked May 21, 2015 by meena.p

1 answer

Subtract $2x^3-x^2+4x-6 $ from $x^3+5x^2-4x$

asked May 21, 2015 by meena.p

1 answer

Find the sum of $5+x-x^2-x^3, 3x -5+2x^2-x^3, x+5+2x^3-5x^2$

asked May 21, 2015 by meena.p

1 answer

If $(a+b=11)$ and $a+b=30$, then find the value of $(a^2+b^2)$

asked May 21, 2015 by meena.p

1 answer

If $(x+2),(x^2+4) $ are length and breadth of a rectangle respectively, the are will be

asked May 21, 2015 by meena.p

1 answer

The product obtained on multiplying $x^3+3x^2-5x$ by $(x-1)$ is a

asked May 21, 2015 by meena.p

1 answer

If $x- \large\frac{1}{x}$$=9$, find the value of $x^2+\large\frac{1}{x^2}$

asked May 21, 2015 by meena.p

1 answer

Simplify $a(b-c) -b(c-a) -c(a-b)$

asked May 21, 2015 by meena.p

1 answer

Find the value of $(5a^6) \times (-10 ab^2)\times (-2.1a^2b^3)$ for $a=1$ and $b=\large\frac{1}{2}$

asked May 21, 2015 by meena.p

1 answer

Find the value of expression $(81x^2+16y^2-72xy)$ when $x =\large\frac{2}{3}$ and $y=\large\frac{3}{4}$

asked May 21, 2015 by meena.p

1 answer

Multiply $(a+b)$ and $(2a-3b+c)$

asked May 21, 2015 by meena.p

1 answer

Find the area of rectangle with $(2x^2,5y^2)^2$ as apart of monomials as their length breadth respectively.

asked May 21, 2015 by meena.p

1 answer

Find the product

asked May 20, 2015 by meena.p

1 answer

Multiply $(7xy+5y) \times 3xy$

asked May 20, 2015 by meena.p

1 answer

Add $5x^2 +3x-8 $ and $4x^2-5x+6$

asked May 20, 2015 by meena.p

1 answer

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

asked Jan 8, 2015 by meena.p

1 answer

AP and PQ are tangents drawn from a point A to a circle with center O and radius 9 cm. If $OA=15\;cm, $ then $AP+AQ$ =_______

asked Jan 8, 2015 by meena.p

1 answer

In the figure if $AP=PB$ , then

asked Jan 8, 2015 by meena.p

1 answer

The perimeter of the $\Delta ABC$ in the adjacent figure is ________

asked Jan 8, 2015 by meena.p

1 answer

The length of the tangent drawn from point $8\;cm$ away from the centre of a circle of rdius $6\;cm$ is

asked Jan 8, 2015 by meena.p

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 __________

asked Jan 8, 2015 by meena.p

1 answer

Equal circles with centres O and O' touch each other at X. OO' produced to meet a circle with centre O' , at A. AC is a tangent to the circle where centre O. O'D is perpendicular to $AC$. Then $\large\frac{DO'}{CO}$

asked Jan 8, 2015 by meena.p

1 answer

In the figure, BC is a tangent to the circle with center O. OE bisects AP. Then $\Delta AEO$ is _______ $\Delta ABC$

asked Jan 8, 2015 by meena.p

1 answer

In the figure two tangents AB and AC are drawn to a circle with center O such that $\angle BAC=120^{\circ},$ then $OA$ =______ $AB$

asked Jan 8, 2015 by meena.p

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 _______

asked Jan 8, 2015 by meena.p

1 answer

Two radii of two concentric circles are $13\;cm$ and $8\;cm$ . AB is a diameter of the bigger circle BD is a tangent to the smaller circle touching it at D. Then the length of AD is ________

asked Jan 8, 2015 by meena.p

1 answer

Two concentric circles are of radii 5 cm and 3cm . The length of the chord of the large circle which touches the smaller circle is __________

asked Jan 8, 2015 by meena.p

1 answer

d and m are the parallel tangents at A and B . The tangent at C makes an intercept DE between d and m. Hence $\angle DFE=$ _______

asked Jan 7, 2015 by meena.p

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 _________

asked Jan 7, 2015 by meena.p

1 answer

Two tangents TP and TQ are drawn to a circle with center 'O' from an external point T. Then $\angle PTQ=$ _______ $ \angle OPQ$

asked Jan 7, 2015 by meena.p

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=__________

asked Jan 7, 2015 by meena.p

1 answer

The incircle of a $\Delta ABC$, touches the sides BC , CA and AB at D, E and F respectively. Then $AF+BD+CE = AE+BF+CD=$ _______ perimeter of $\Delta ABC$

asked Jan 7, 2015 by meena.p

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 ______

asked Jan 7, 2015 by meena.p

1 answer

In the figure two equal circles touch each other at $T$, if $QP=4.5\;cm$ , then $QR=$______

asked Jan 6, 2015 by meena.p

1 answer

If the figure if PR is the tangent to the circle at P and Q is the centre of the circle , then $\angle POQ$ =

asked Jan 6, 2015 by meena.p

1 answer

In the figure if $AP=PB$, then

asked Jan 6, 2015 by meena.p

1 answer

If the quadrilateral PQRS circumscribes a circle,as shown in the figure . then $PD+QB$ = ______

asked Jan 6, 2015 by meena.p

1 answer

In the figure if PA and PB are tangents drawn to a circle Such that $\angle APB =30^{\circ}$ and chord AC is drawn parallel to the tangent PB, then $\angle ABC$=_____

asked Jan 6, 2015 by meena.p

1 answer

APB is a tangent to a circle with center O at point P, If $\angle QPB =50^{\circ}$ then the measure of $\angle POQ $ is ______

asked Jan 6, 2015 by meena.p

1 answer

Ask Questions, Get Answers