Question

A circle of radius 3 cm is cut out from a rectangular piece of paper of dimensions 10 cm x 11 cmFind the area of the left over paper. (Take 1 = 3.14)​

Answer 1

Answer:

81.74 cm

Step-by-step explanation:

see the picture in the attachment for a step by step explanation.

Answer 2

Area of left over  paper $=81.74cm^{2}$

Step-by-step explanation:

Given,

Dimension of rectangular piece   $l=11cm$         $b=10cm$

Radius of circle cut out from paper $r=3cm$

Find the area of the left over paper=?

Use pi=3.14

Solution,

Area of rectangular piece $A_{1}=l\times b$

                                                $=11\times 10$

                                                 $=110cm^{2}$

Area of circle $A_{2}=\Pi r^{2}$

                            $=3.14\times 3^{2}$

                            $=28.26cm^{2$

Area of left over paper= $A_{1}-A_{2}$

                                     $=110-28.26$

                                     $=81.74cm^{2}$