a circular well with a diameter of 2 metres , is dug to a depth of 8 metres . what is the volume of the earth dug out ?
"solution volume = π r 2 h ‹ = › ( 22 / 7 × 1 × 1 × 8 ) m 3 ‹ = › 25.1 m 3 . answer b"
volume_cylinder(divide(2, 2), 8)