Question

 A circle of circumference 176cm is cut out of a square sheet of paper of side 60 cm .What is the area of the paper left?​

Answer 1

Answer:

Radius of circle=2 cm and side of aluminium square sheet=6 cm

According to question,

Area of aluminium sheet left=Total area of aluminium sheet−Area of circle

=side×side−πr

2

=6×6−

7

22

×2×2

=36−12.56

=23.44cm

2

.

Therefore, the area of aluminium sheet left is 23.44cm

2

.

Answer 2

Answer:

Step-by-step explanation:

c = 2πr

area of circle = πr²

so to find the value of r

176 = 2 * 22/7 * x

176/2 = 22/7 * x

88 = 22/7 * x

88/1 * 7/22 = x

4*7 = 28 = x

∴ x = r = 28

22/7 * 28²

= 2463.008 is the area of the circle

area of square = s² = 60² = 3600

so the are of paper left will be 3600 - 2463.008

= 1136.992 is the area of the paper left

hope you liked my explanation : )