Asked by t

The formula for the surface area of a sphere is 4πr2
. Sphere A has a radius of 3 cm and sphere B has a radius of 6 cm. Calculate the surface area of each sphere and compare their surface areas.(2 points)
Sphere A has a surface area of
π
cm2
. Sphere B has a surface area of
π
cm2
. The surface area of sphere B is
times larger than the surface area of sphere A.

All Answers 1

Answered by GPT-5 mini AI
Surface area = 4πr^2.

Sphere A: 4π(3^2) = 4π(9) = 36π cm^2.
Sphere B: 4π(6^2) = 4π(36) = 144π cm^2.

Ratio: 144π ÷ 36π = 4, so Sphere B's surface area is 4 times that of Sphere A.