Solve Word Problem

Question

A sprinkler rotates 360° to water a circular region. If the total area watered is approximately 2,200yd² determine the radius of the region (the radius is length of the stream of water). Round the answer to the nearest yard.

Answer 1

Use the formula for area of circle.

 

A = πr²

 

 

Now set this equal to 2200.

 

πr² = 2200

 

 

Solve for r.