Question

from a circular card sheet of radius 5cm a circular sheet of of radius of 4cm is removed find the area of the remaining sheet (n=3.14)​

Answer 1

Answer:

area of bigger circle. = 2πr

= 2x3.14x5

= 2x15.7

= 31.4

area of smaller circle. =2πr

= 2x3.14x4

=2x12.56

=25.12

area of remaining part= 31.4-25.12

= 6.28