SOLUTION: a circular pool has a radius of 4 feet and a 1-foot wide border. a. what is the area of the pool without the border? b. what is the area if the pool with the border? c. what is the

Algebra ->  Customizable Word Problem Solvers  -> Geometry -> SOLUTION: a circular pool has a radius of 4 feet and a 1-foot wide border. a. what is the area of the pool without the border? b. what is the area if the pool with the border? c. what is the      Log On

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Question 946742: a circular pool has a radius of 4 feet and a 1-foot wide border. a. what is the area of the pool without the border? b. what is the area if the pool with the border? c. what is the area of te border by itself? d. write an expression for the area a border around a circular pool with a radius of r feet.
Answer by josgarithmetic(39617) About Me  (Show Source):
You can put this solution on YOUR website!
Question part (d) is not clear. The other three question parts are uncomplicated.

(a):
Just the pool top area, %28pi%29%284%29%5E2=16pi.

(b):
Combined area of pool and the 1-foot border,
meaning for total radius of 4%2B1=5;
%28pi%29%285%29%5E2=25pi.

(c):
For just the border area, find the difference.