a circular sheet of radius of 4 cm a circle of 3m radius is removed find area
Answers
Answer:
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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
Answer:
Area of remaining sheet = 21.98cm^2
Step-by-step explanation:
Radius of circular sheet (r1)=4cm
Radius of circle(r2) = 3cm
π =3.14
Area of remaining sheet = ?
Area of remaining sheet =Area of circular sheet
- Area of circle
=πr1^2-πr2^2
=π(r1^2-r2^2)
=3.14(4^2-3^2)
=3.14(16-9)
=3.14*7
=21.98 cm^2