Question

A circle of radius $2cm$ is cut out from a square piece of an aluminium sheet of side $6cm$ . What is the area of the left over aluminium sheet? ( Take $\pi =3.14$)

Answer 1

Given, radius of circle $=2cm$
Side length of square shaped aluminium sheet$=6cm$
Area of square-shaped sheet $={\text{(Side)}}^2$
$=(6{)}^2$
$=36c{m}^2$
Area of circle $=\pi r^2$
$=3.14\times 2\times 2$
$=12.56c{m}^2$
Remaining area of sheet $=36-12.56$
$=23.44c{m}^2$