Question

So, um how do I even solve this?
(I will post a SS of the model too)
Here are the answers and the question:
What is the volume of the sphere?
6 meters cubed
7 meters cubed
14 meters cubed
28 meters cubed

Answer 1

The height of the sphere is equal to the diameter. Therefore because the diameter is twice the radius,,

h=2r

The formula for the volume of a cylinder is V=pi r^2 h, so substituting in for h and V we get

21= pi * r^2 * 2r Which simplifies to 21=2pi * r^3

From there you can solve for r^3 and plug your answer into the formula for the volume of a sphere, which is

V=4/3 pi r^3

V=4/3 Pi * 21/2pi

Answer 2

What is your Answer?