Question

a circle of radius 4 cm is cut out from a circular piece of paper of radius 10 cm find the area of a left over paper fees if the centre of both circles is same​

Answer 1

Answer:

Area of left over piece of paper is 263.76 sq.cm.

Step-by-step explanation:

Radius of circular piece of paper (r)=10cm.

Area of circular piece of paper=$\pi$$r^{2}$

                                                  =3.14×$10^{2}$

                                                   =314sq.cm.

Radius of circle=4 cm.

Area of circle=3.14×$4^{2}$

                     =3.14×16

                     =50.24 sq. cm.

Area of left over paper piece=area of circular piece of paper-area of circle

                                                =314-50.24

                                               =263.76 sq.cm.

Answer 2

Answer:

Radius of circular piece of paper (r)=10cm.

Area of circular piece of paper=\piπ r^{2}r

2

=3.14×10^{2}10

2

=314sq.cm.

Radius of circle=4 cm.

Area of circle=3.14×4^{2}4

2

=3.14×16

=50.24 sq. cm.

Area of left over paper piece=area of circular piece of paper-area of circle

=314-50.24

=263.76 sq.cm.