Then the radius is 4/ root pie.

Then diameter =8/ root cake

Perimeter =8* Radicalism = about 14. 18.

Because the side area is 25 square centimeters.

So the height is 25/(8* radical) = about 1.763.

Then volume = bottom area * height = 16*25/(8* root cake) =16 *1.763 = 28.21cubic centimeter.