Question

from a circular paper of radius 4 cm a small circle of radius 3 cm is cut but keeping the same Centre find the area of the remaining paper​

Answer 1

Answer:

Step-by-step explanation:

Ar=πr^2

So π16

Ar of another circle

9π

Therefore area of remaining is 7π

Answer 2

Answer:

Area of circle 1=2×22/7×4

=25.14 cm square

Area of circle 2 =2×22/7×3

=18.85 cm square

Area of remaining portion=25.14-18.85 cm square

=6.29 cm square