Question

The formula for the volume of a cylinder is V=πr2h What is the approximate volume of two refraction cups? Use 3.14 for pi.

Answer 1

Given:

The height of the refraction cup is

$h=2cm$

The radius of the refraction cup is

$\begin{gathered} r=\frac{d}{2} \\ =\frac{8}{2} \\ =4cm \end{gathered}$

Required:

To find the volume of the refraction cup.

Explanation:

The volume of the half cylinder is

$V=\frac{1}{2}\pi r^2h$

Now

$\begin{gathered} V=\frac{1}{2}\times3.14\times4^2\times2 \\ \\ =50.24cm^3 \end{gathered}$

Final Answer:

The volume of the given refraction cup is,

$V=50.24cm^3$