We have been given that a sphere and a cylinder have the same radius and height. The volume of the cylinder is 21 meters cubed. We are asked to find the volume of the sphere.
We know that height of sphere is equal to its radius. This means that
.

Using
, we will get:


Upon comparing volume of sphere and volume of cylinder, we can see that volume of sphere is
times volume of cylinder.




Therefore, the volume of the sphere would be 28 cubic meters.
Answer:
I don't know because I would need a visual picture of the diagram you are most likely looking at, it would be helpful if you include the picture somehow.
Step-by-step explanation:
What do you need help on? Just post the question.
640 x 0.30= 192
640-192= 448
448 is the answer