Paul
3. From a circular sheet of radius 4cm, a circle of radius 3cm is
removed. Find the area of the remaining sheet (Take r = 3.14).
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Step-by-step explanation:
The area of the circular sheet with 4cm radius is,
A=πr2
=16π
The area of the circular sheet with 3cm radius is,
A=πr2
=9π
Since the circle with radius 3cm is removed, then the remaining area is,
A=16π−9π
=7π
=7×3.14
=21.98cm2
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