Question

OAB is a sector of a circle
what is the area of the sector

Answer 1

I solved in the picture

Hope this helps ^-^

Answer 2

12.56 square cm

Explanation:

`Central \:angle \:(\theta) = 40°\\</p><p>Radius \: (r) = 6 cm`

Let A be the area of the sector of circle.

`\therefore \: A = (\theta )/(360 \degree) * \pi {r}^(2) \\ \\= ( 40 \degree)/(360 \degree) * 3.14* {6}^(2) \\ \\ = ( 1)/(9) * 3.14 * 36 \\ \\ = 3.14 * 4 \\ \\ = 12.56 \: {cm}^(2)`