Question

[4.8] 1 can find the area of a sector.

Answer 1

given:

radius= 12 cm

to find:

circumference and area of the circle.

solution:

circumference:

`c = 2\pi \: r`

`c = 2 * \pi * 12`

`c = 75.39822 \: cm`

`c = 75.4 \: cm`

area:

`a = \pi {r}^(2)`

`a = \pi * {12}^(2)`

`a = 452.38934 \: {cm}^(2)`

`a = 452.39 \: {cm}^(2)`