Question

a sphere has volume 36 pi ft^3. what is its total area?
a.72 pi ft^3
b.18 pi ft^3
c.36 pi ft^3
d. 32/3 pi ft^3

Answer 1

Area is in units-squared (i.e., \(\text{ft}^{2}\)), so they're all wrong.

Answer 2

sorry it is ft^2

Answer 3

geoff is right...
but the volume of a sphere is 4/3pir^3
so 4/3pir^3 =36pi
Solve for r
r=3
Area of a sphere ..hmm sorry dont remember formula all i can think of is pir^2 but thats a circle

Answer 4

Area of a sphere is \(4 \pi r^2\).

Answer 5

thank you