In the bullseye shown. ab = bc = cd = de, and ae = 14. find the difference in the areas of the blue and red rings. round to the nearest square inch.

a) 22 in
b) 38 in
c) 77 in
d) 308 in

AB = 14/4 = 3.5

Y = area of yellow
R = area of red
B = area of blue

R = full area of red - Y
B = full area of blue - (Y + R)

Y = pi(3.5^2) = 38.465
R = pi(7^2) - Y = 153.86 - 38.465 = 115.395
B = pi(10.5^2) - 153.86 = 346.185 - 153.86 = 192.325

192.325 - 115.395 = 76.93 = 77 sq inches rounded

Think of it as five or above give it a shove. change the 5 or above to the right to a zero and add one to the number on the left.