Cylinder volume with height h = 2.5 and the radius of the base r = 10 equal 785.375
A cylinder is a geometric body closed between two parallel bases that are circles.
Cylinder volume formula: 
where h is the height of the cylinder,r is the radius of the base
where h is the height of the cylinder,d is the diameter of the base
where h is the height of the cylinder,S is the area of the baseSolution:
V = π·r2 · h
= π·102 · 2.5
= π·100 · 2.5
= 250·π
=
785.375
a: Cylinder volume with height h = 2.5 and the radius of the base r = 10 equal 785.375