Question

Find the area of a circular field that has a circumference of 396m.

Answer 1

The Circumference of a Circle with radius r = 2πr
Here, Circumference of a Circle = 369
⇒ 2πr = 396

⇒ r = `(396)/(2pi)`

= `(396 xx 7)/(2 xx 22)`
= 63m
The Area of a Circle with radius r = πr²
⇒ The Area of a Circle with radius 63m
= π(63)²

= `(22)/(7) xx (63)^2`

= `(22)/(7) xx 3969`
= 12,474m².