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

Sector AOB is 1/9 of the total circle.

A = pi x 3^2

A = 9pi

9pi / 9 = 1pi

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

Hope this helps!! :)