Question

From the circular sheet of radius 4cm,a circle of radius 3 cm is removed. Find the area of

remaining sheet. ( Take ∏ = 3.14)
​

Answer 1

Answer:

21.98cm²

Step-by-step explanation:

Area of circle with radius 4cm

πr²=3.14*4*4=50.24cm²

now

area of removed circle with radius 3 cm

=πr²=3.14*3*3=28.26 cm²

AREA OF REMAINING SHEET

=(50.24-28.26)=21.98 cm²

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Answer 2

Answer

the area of the circular sheet with 4 cm radius is ,

A = πr^2

= 16 π

The area of the circular sheet with 3 cm radius is ,

A = πr^2

= 9π

Since ,

The circle with radius 3 cm is removed , then the remaining area is ,

A = 16π - 9π

= 7π

= 7 * 3.14

= 21.98 cm^2

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