A circle has a radius of 2.5 centimeters and a central angle AOB that measures 90°. What is the area of sector AOB?
1 Answer
Sep 5, 2016
Explanation:
The fact that the central angle of the sector is 90° gives you what fraction the sector is of the circle.
The sector area will be this same fraction of the area of the whole circle.
Sector area =
=