Recent questions tagged circles

If x units are added to the length of the radius of a circle, what is the number of units by which the circumference of the circle is increased?

asked Aug 27, 2015 by pady_1

1 answer

A regular hexagon is inscribed in a circle of radius r cms. What is the perimeter of the regular hexagon?

asked Aug 27, 2015 by pady_1

0 answers

If the diagonal and the area of a rectangle are 25 m and 168 m2, what is the length of the rectangle?

asked Aug 27, 2015 by pady_1

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If the sides of a triangle measure 72, 75 and 21, what is the measure of its in radius?

asked Aug 27, 2015 by pady_1

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The circumference of the front wheel of a cart is 30 ft long and that of the back wheel is 36 ft long. What is the distance travelled by the cart, when the front wheel has done five more revolutions than the rear wheel?

asked Aug 27, 2015 by pady_1

0 answers

The median of a triangle devides into two

asked Aug 27, 2015 by pady_1

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The area of incircle of an equilateral triangle of side 42 cm is :

asked Aug 27, 2015 by pady_1

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If the circumference of a circle increases from 4\pi to 8\pi, what change occurs in the area ?

asked Aug 27, 2015 by pady_1

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The area of rhombus is 150 cm square. The length of one of the its diagonals is 10 cm. The length of the other diagonal is:

asked Aug 27, 2015 by pady_1

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A triangle and a parallelogram are constructed on the same base such that their areas are equal. If the altitude of the parallelogram is 100m , then the altitude of the triangle is.

asked Aug 27, 2015 by pady_1

0 answers

What will be the ratio between the area of a rectangle and the area of a triangle with one of the sides of the rectangle as base and a vertex on the opposite side of the rectangle ?

asked Aug 27, 2015 by pady_1

1 answer

If the radius of a circle is diminished by 10%, then the area is diminished by:

asked Aug 27, 2015 by pady_1

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The wheel of a motorcycle, 70 cm in diameter makes 40 revolutions in every 10 seconds. What is the speed of the motorcycle in km/hr

asked Aug 27, 2015 by pady_1

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Find the circumference of a circle, whose area is 24.64 meter sqaure

asked Aug 27, 2015 by pady_1

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The area of rhombus is 150 cm square. The length of one of the its diagonals is 10 cm. The length of the other diagonal is:

asked Aug 27, 2015 by pady_1

0 answers

A triangle and a parallelogram are constructed on the same base such that their areas are equal. If the altitude of the parallelogram is 100m , then the altitude of the triangle is.

asked Aug 27, 2015 by pady_1

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A piece of wire 20 cm long is bent into an arc of a circle subtending an angle of 60° at the centre then what is the radius of the circle.

asked Aug 27, 2015 by pady_1

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

asked Aug 27, 2015 by pady_1

1 answer

The cost of fencing a circular field at the rate of Rs. 10 per meter is Rs.440. What is the radius of the circular field.

asked Aug 27, 2015 by pady_1

1 answer

If the circumference of the circle exceeds its diameter by 30 cm. What is the diameter of the circle.

asked Aug 27, 2015 by pady_1

0 answers

What is the ratio of the areas of a circle and an equilateral triangle whose diameter and a side of triangle are equal.

asked Aug 27, 2015 by pady_1

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From each vertex of trapezium a sector of radius 7 cm has been cut off.Write the total area cut off.

asked Aug 27, 2015 by pady_1

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What will be the ratio between the area of a rectangle and the area of a triangle with one of the sides of the rectangle as base and a vertex on the opposite side of the rectangle ?

asked Aug 27, 2015 by pady_1

0 answers

If the area of a square with the side a is equal to the area of a triangle with base a, then the altitude of the triangle is.

asked Aug 27, 2015 by pady_1

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The height of an equilateral triangle is 10 cm. find its area.

asked Aug 27, 2015 by pady_1

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The area of an equilateral triangle is \sqrt{3} m^2 its one side is

asked Aug 27, 2015 by pady_1

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The radius of two circles are 13 cm and 6 cm respectively. What is the radius of the circle which has circumference equal to the sum of the circumference of two circles.

asked Aug 27, 2015 by pady_1

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If the circumference and area of a circle are numerically equal then whatis the radius of the circle.

asked Aug 27, 2015 by pady_1

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A courtyard is 25 meter long and 16 meter board is to be paved with bricks of dimensions 20 cm by 10 cm. The total number of bricks required is :

asked Aug 27, 2015 by pady_1

0 answers

A farmer wishes to start a 100 sq. m. rectangular vegetable garden. Since he has only 30 meter barbed wire, he fences three sides of the garden letting his house compound wall act as the fourth side fencing. Then find the dimension of the garden.

asked Aug 27, 2015 by pady_1

0 answers

The ratio between the length and the breadth of a rectangular park is 3 : 2. If a man cycling along the boundary of the park at the speed of 12 km/hr completes one round in 8 minutes, then the area of the park (in sq. m) is:

asked Aug 27, 2015 by pady_1

0 answers

One side of rectangular field is 15 meter and one of its diagonals is 17 meter. Then find the area of the field.

asked Aug 27, 2015 by pady_1

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The length of an arc of a circle of radius 12 cm is 10\pi cm. Write the angle measure of this arc.

asked Aug 27, 2015 by pady_1

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

asked Aug 27, 2015 by pady_1

0 answers

Find the perimeter of the protactor if its diameter is 14 cm.

asked Aug 27, 2015 by pady_1

0 answers

A path of 5 m is build round the circular park of radius 15m. Find the area of the path.

asked Aug 27, 2015 by pady_1

1 answer

ABC is an equilateral triangle of side 30m. A Cow is tied at vertex A bymeans of 10m long rope. What is the area the cow can graze in.

asked Aug 27, 2015 by pady_1

0 answers

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

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