Question

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

Answer 1

Answer:

A≈8758.26

Step-by-step 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

Answer:

$221.8 cm^{2}$

Step-by-step explanation:

$C=2\pi r\\A=\pi r^{2}$

$2\pi r=52.8\\r=\frac{52.8}{2\pi }$

$A=\pi ((\frac{52.8}{2\pi }) ^{2} )$

$A=\pi (70.61681215)$

$A = 221.8 cm^{2}$