How to find the surface area of a sphere

Practice Questions

ISEE Upper Level (grades 9-12) Quantitative Reasoning › How to find the surface area of a sphere

Questions

is a positive number. Which is the greater quantity?

(A) The surface area of a sphere with radius

(B) The surface area of a cube with edges of length

In terms of $\pi$ , give the surface area, in square inches, of a spherical water tank with a diameter of 20 feet.

Sphere A has volume $972 \pi \textrm{ in}^{3}$ . Sphere B has surface area $400 \pi \textrm{ in}^{2}$ . Which is the greater quantity?

(a) The radius of Sphere A

(b) The radius of Sphere B

Which is the greater quantity?

(a) The surface area of a sphere with radius 1

(b) 12