Question

The diameter of circle A is 8 inches. the diameter of circle B is 4 inches greater then the diameter of circle A. The diameter of circle C is 4 inches greater then the diameter of circle B

the area of circle A is ____ the area of circle B is ____ the area of circle C

Answer 1

Explanation:

radius of A = 4 in

area of A = 16π in²

radius of B = 6 in

area of B = 36π in²

radius of C = 8 in

area of C = 64π in²

Area of A is 16π/(36π) the area of B = 4/9 the area of B

Area of B is 36π/(64π) the area of C = 9/16 the area of B

Answer 2

Circle A
d=8
r=d/2=8/2=4
r=4
Area= π•4^2
Area=3.14•16
Area=50.24 in^2

Circle B
d+4=8+4=12
r=12/2=6
r=6
Area= π•r^2
Area=3.14•6^2
Area=3.14•36
Area=113.04 in^2

Circle C
d+4=12+4=16
r=16/2=8
r=8
Area= π•8^2
Area=3.14•64
Area=200.96 in^2