https://decimal-to-binary.com/volume-cilindr.html?id=7

Cylinder volume with height h = 7 and the radius of the base r = 1 equal 21.991

Method for calculating cylinder volume
Height h: Radius r:

Cylinder

A cylinder is a geometric body closed between two parallel bases that are circles.
Cylinder volume formula: Cylinder volume formula by height and base radius where h is the height of the cylinder,r is the radius of the base

Solution:
V = π·r2 · h
= π·12 · 7
= π·1 · 7
= 7·π
=
21.991

a: Cylinder volume with height h = 7 and the radius of the base r = 1 equal 21.991