A circle of radius 3cm is cut from a circular sheet of radius 4cm . find the area of sheet remains?
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Step-by-step explanation:
The area of the circular sheet with 4cm radius is,
A=πr
2
=16π
The area of the circular sheet with 3cm radius is,
A=πr
2
=9π
Since the circle with radius 3cm is removed, then the remaining area is,
A=16π−9π
=7π
=7×3.14
=21.98cm
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