Home
Class 12
MATHS
In the figure, when the outer circles al...

In the figure, when the outer circles all have radii 'r', then the radius of the inner circle will be

A

`sqrt(2)r`

B

`(sqrt(2)-1)r`

C

`(1)/(sqrt(2)r)`

D

`(2)/((sqrt(2)-1)r)`

Text Solution

Verified by Experts

The correct Answer is:
B
Promotional Banner

Topper's Solved these Questions

Similar Questions

Explore conceptually related problems

In the following figure, if PQ = R (P is the centre of the bigger circle) and the shaded area is equal to A, then the radius of the inner circle is equal to -

In the adjoining figure,if the radius of each of the four outer circles is r, what is the radius of the inner circle? (FIGURE) (a) (2)/(sqrt(2)+1)r(b)(1)/(sqrt(2))r(c)(sqrt(2)-1)r(d)sqrt(2)backslash r

The area enclosed by the circumference of two concentric circles is 423.5 cm^(2) . If the circumference of outer circle is 132 cm. Calculate the radius of the inner circle

The area enclosed between the concentric circles is 770cm^(2). If the radius of the outer circle is 21cm, find the radius of the inner circle.

Two circle , both of radii a , touch each other and each of them touches internally a circle of radius 2a , then the radiusof the circle which touches all the three circles is :

There are two concentric circles such that the area of the outer circle is four times the area of the inner circle. Let A, B and C be three distinct point on the perimeter of the outer circle such that AB and AC are tangents to the inner circle. If the area of the outer circle is 12 square centimeters then the area (in square centimeters) of the triangle ABC would be:

In the figure all the circles have radius 'a' and their centres form the vertices of a regular hexagon.Prove that the area enclosed between the circles is nearly equal to (24)/(25)a^(2)

In the diagram below,the outer circle has radius 3, and the inner circle has radius 2. The triangle is isosceles with the sides not touching the smaller cirale be equal.Then square of the area of darkened region is