from circular sheet of radius 4 cm, a circle of radius 3 cm is removed find the area of remaining sheet
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The area of the circular sheet with 4cm radius is,
A=πr 2
=16π
The area of the circular sheet with 3cm radius isA=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 2
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7
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=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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