# math

posted by Emma

A sector in a circle of radius 8.1 m has an area of 53.5 m^2. The central angle in a sector must be _____o. Round to one decimal place.

1. MathMate

Hint:
a sector is a pie-piece, similar to a slice of pizza.

The area of a sector of a given radius is proportional to the central angle.

Area of Sector
--------------
Area of circle

central angle
=-------------
360°

2. Emma

okay thanks!

3. MathMate

You're welcome!

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