Question

A concrete pillar is a cylinder with a radius of 20 cm and a height of 2m
A) find the volume of the pillar
B) find the volume of one of the rods and the volume of steel in the pillar
C) find the volume of concrete contsined in the pillar

Answer 1

I have answered part A of your question.
The other two parts can not be answered since ur question lacks some details.