Question

A cylinder and its dimensions are shown below.

12.1 cm


3.8 cm


One equation for calculating the volume of a cylinder is V=Bh, where 8 represents the area of the base of the cylinder. Which expression can be used to find the value of B, in square centimeters, for this cylinder?


A (12.1 B 2(12.1)


C (3.8)


D None of these

Answer 1

`(A) B=\pi (12.1)^2`

Explanation:

Given a cylinder with the following dimensions

Radius of the Cylinder =12.1 cm

Height of the Cylinder =3.8cm

Volume of a cylinder = Base Area X Height

The base area is a circle, therefore the expression that can be used to find the value of B, (in square centimeters), for this cylinder is given as:

`Base Area =\pi r^2\\B=\pi (12.1)^2`