👉 Archimedes' law, named after Greek mathematician Archimedes of Syracuse, states that the volume V of a hollow cylinder can be calculated by multiplying its radius R and height h. Specifically, if the cross-sectional area A is known, then: \[V = \frac{A}{\pi}h\] This formula gives us an exact answer for calculating the volume of a hollow cylinder when we know the radius R and height h. It's important to note that Archimedes