Question

8. If a circle of 4 cm radius is out off from a of 5 cm radius
of circular sheet. Find area of remaining sheet.​

Answer 1

Answer:

area of remaining sheet is 28.26cm^2

Step-by-step explanation:

area of remaining sheet = area of full sheet - area of cut part

= πr^2 - πr^2

= 22/7×5^2 - 22/7×4^2

= 3.14×25 - 3.14×16

=3.14 ( 25 - 16 )

= 3.14 (9)

= 28.26

Answer 2

Step-by-step explanation:

Area of first circle ,

Radius = 5 cm

Area = 22/7 × 5^2

= 78.57 cm^2

Area of second circle ,

Radius = 4 cm

Area = 22/7 × 4^2

= 50.28 cm^2

Now , area of the part left = 78.57 - 50.28

= 28.29

Hope this will help you .