Find the volume of the hemisphere

Question

the r=3'

Answer 1

Actually, if you have the radius, it's quite easy. Here's the formula for a sphere  (4(3.14159...)r3) ÷ 3 so for an hemisphere it's going to be (4(3.14159...)r3) /3)/2

So here's your answer (3.14159) is actually pi

((4pi*3^3)/3)/2

(36pi/3)/2

12pi/2

6pi (You can keep the answer like that)

6*pi = 18.84955592... (or like that)

Answer 2

The formula for volume of an entire sphere:

V=(4/3)pi*r^3

V=(4/3)pi*(3)^3

V=(4/3)pi*27

V=(4)pi*9

V=36pi cubic feet

The volume of a hemisphere would be half of that.

V=18pi cubic feet

Hope that helps!