Answer 1

Given data is as follows:

 h = 10.5 m 

`3(pir^2 + pir^2) = 2(2pirh)`

We have to find the volume of the cylinder.

From the given data, we have

`3(pir^2 + pir^2) = 2(2pirh)`

               `6pir^2 = 4pirh`

                  `3r = 2h`

But we know from the given data, that  h = 10.5 m

Therefore,

Since we know r and h , we can easily find the volume of the cylinder.

Volume =  `pir^2h`

=`22/7 xx 7 xx7 xx 10.5`

Volume = 1617 m³

Therefore, the volume of the cylinder is 1617 m³.