from a circular sheet of radius 4 cm a circle of radius 3 cm is removed find the area of the remaining sheet (take π=3.14)
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2
Answer:
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
2
Step-by-step explanation:
Answered by
1
Answer:
Radius of the circular sheet = 4 cm
∴ Area = πr square = π × 4 × 4 = 16π cm square
Radius of the circle to be removed = 3 cm
∴ Area of sheet removed = πr square = 9π cm square
Area of the remaining sheet
= (16π – 9π) cm square = 7π cm square
= 7 × 3.14 cm square = 21.98 cm square
Hence, the required area = 21.98 cm square
Step-by-step explanation:
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