Question

if the circumference of a circular sheet is 154m,find its radius.Also find the area of the sheet(Take=22/7)​

Answer 1

➠ we know,

circumference of a circle = 2πr [where r = radius]

➢ Solution:

⟼ 2πr = 154 m

⟼ πr = 154m/2

⟼ (22/7)r = 77 m

⟼ r = (77m×7)/22

∴ r = 24.5 m

⟹ Area of a circle = πr²

⟼ Area = (22×7)×(24.5)²

⟼ Area = (22×7)×(24.5)×(24.5)

∴ Area of the circle = 1886.5 m²