Home
Class 10
MATHS
The radii of two concentric circles are ...

The radii of two concentric circles are 4 cm and 5 cm. The difference in the areas of these two circles is :

A

`pi`

B

`4pi`

C

`8pi`

D

`9pi`

Text Solution

Verified by Experts

The correct Answer is:
D
Promotional Banner

Topper's Solved these Questions

  • SAMPLE PAPER 6

    OSWAL PUBLICATION|Exercise Section - A |6 Videos

  • SAMPLE PAPER 6

    OSWAL PUBLICATION|Exercise Section - B |5 Videos

  • SAMPLE PAPER 5

    OSWAL PUBLICATION|Exercise Section -C|2 Videos

  • SAMPLE PAPER 7

    OSWAL PUBLICATION|Exercise Section -C|7 Videos

Similar Questions

Explore conceptually related problems

The radii of two concentric circles are 19 cm and 16 cm respectively. The area of the ring enclosed by these circles is

If radii of two concentric circles are 4 cm and 5 cm, then length of each chord of one circle which is tangent to the other circle, is

The difference between the radii of the smaller circle and the bigger circle is 7 cm and the difference between the areas of the two circles is 1078 sq cm. What is the radius of the smaller circle in cm?

If radii of two concentric circles are 12 cm and 13 cm, find the length of each chord of one circle which is tangent to the other circle.

In the give figure, the sectors of two concentric circles of radii 7 cm and 3.5 cm are shown. Find the area of the shaded region.

The areas of two concentric circles are 1386cm^(2) and 962.5cm^(2) .The width of the ring is