as always, v = πr^2 h
so plug in your numbers.
Mathematics
Calculate the volume of a cylindrical steel bar which is 8cm long and 3.5cm in diameter
2 answers
volume is, the area of the cross-section, multiplied by the length
v = [π * 3.5 cm)^2] * 8 cm
v = [π * 3.5 cm)^2] * 8 cm