Question

Find volume of cylinder whose radius is 20 and height is 65

Answer 1

Brother Google will solve it in search console. Just try a search with the question in Google.

Find volume of cylinder whose radius is 20 and height is 65

Anyway, the answer is V≈81681.41. See below screenshot for more detail.

Answer 2

We know that
Volume of cylinder is  = pie r^h
           Putting values
3.14 * 20*20*65
1256 * 65
         81640 unit square