Question

from a circular metal sheet of radius 9 CM a circle of radius 4 cm find the area of the remaining seats take Pi 3.14​

Answer 1

Step-by-step explanation:

first we find area of circle of radius 9cm

A of circle= πr^2

=314/100×9×9

=254.34cm^2

now we find are of circle of radius 4 cm

A of circle= πr^2

=314/100×4×4

=50.24cm^2

A of remaining sheet=A of circle - A of circle

= 254.34 - 50.24

=204.10cm^2