Question

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)​

Answer 1

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:

Answer 2

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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