Question

The radius of circle A is twice that of circle B and the radius of circle B is twice that of circle C. Their area will be in the ratio

• A. 16 : 4 : 1
• B. 4 : 2 : 1
• C. 1 : 2 : 4
• D. 1 : 4 : 16

Answer 1

Answer:

A. 16 : 4 : 1

Radius of Circle A=twice of circle B

Radius of circle B = twice of circle C

Radius of c = r , Radius of B = 2r., radius of A = 4r.

Required ratio$= \pi (4r)^2: \pi (2r)^2: \pi (r)^2$

= 16 : 4 : 1