Question

The area of this circle is 72 m²
What is the area of a 45° sector of this circle?

Answer 1

it is 9 meters because 45÷360 is 0.125 and 0.125 as a fraction is 1/8. 72 ÷ 8 equals 9, therefore the answer is 9

Answer 2

9 m²

Explanation:

The area (A) of a sector of a circle is

A = area of circle × fraction of circle

= 72 ×
`(45)/(360)`

= 72 ×
`(1)/(8)` = 9 m²