Question

Find the area of circle whose circumference is 418m​

Answer 1

Answer:

13904.09414m2

Step-by-step explanation:

Using formula

A=πr2

C=2πr

A=C2/4π =418sqr/4.π

=13904.09414m2

Answer 2

Answer:

4422.25m^2

Step-by-step explanation:

let 'r' be the radius of th circle

circumference = 418 m

2πr = 418

2*22/7*r = 418

2*22*r = 418*7

r = (418*7)/2*22

r = 209*7/22

r = 1463/22m

now…

area of circle = πr^2

= 22/7*1463/22*1463/22

(1463*1463)/22*7

= 4422.25 m^2