The watered area is about [blank] ft2 [Simplify you answer. Type an exact answer in terms of PI ]

Question

A water sprinkler sends water out in a circular pattern. How large is the watered area if the radius of the watering pattern is 11 ft? 

Answer 1

A = πr²

 

Given r=11 ft

 

A = π(11 ft)²

 

Simplified, exact answer in terms of π:

A = 121π ft²       [we write digits first]

Answer 2

Again, use the area of a circle formula

 

A=pi(radius)²

A= 3.14(11)²

A=380.133 ft²