Question

2.From a circular sheet of radius 4 cm, a circle of radius 3 cm is removed. What is the area of the remaining sheet?

Answer 1

Answer:

Thus, the area of remaining sheet is 21.98cm2

Step-by-step explanation:

Radius of circular sheet(R)=4cm

radius of removed circle(r)=3cm

Area of remaining sheet=Area of circular sheet−Area of removed circle

=πR2−πr2=π(R2−r2)

=π(42−32)=π(16−9)

=3.14×7=21.98cm2

Thus, the area of remaining sheet is 21.98cm2

Answer 2

Answer:

The answer is 22cm^2.

Here R means radius of outer circle

and r means radius of inner circle.

I hope that my answer is useful for you.