Question

2. (i) Find the area of a circle whose circumference
is 52.8 cm​

Answer 1

A≈8758.26

Explanation:

`A\pi r{2}`

=π·52.8
`{2}`

value of pi is approximately 3.14 so

3.14*52.8
`{2}`

≈8758.26

Answer 2

`221.8 cm^(2)`

Explanation:

`C=2\pi r\\A=\pi r^(2)`

`2\pi r=52.8\\r=(52.8)/(2\pi )`

`A=\pi (((52.8)/(2\pi )) ^(2) )`

`A=\pi (70.61681215)`

`A = 221.8 cm^(2)`