Question

Find the area of sector AOB. Enter your answer in terms of a fraction of π and rounded to the nearest tenth.

The area of sector AOB is π ≈ ____ mm2.

Answer 1

40/360 = 1/9

To find the area of sector AOB, we can find the area of the whole circle and divide it by 9.

Area of a circle: A = pi x r^2

A = pi x 3^2

A = 9pi / 9 = 1pi

The area of sector AOB is approximately 1pi = 3.1 mm^2.

Hope this helps!! :)