math
posted by carmie on .
George has enough fencing to enclose 2400 square feet around a circular pool. If he builds a circular fence and he wants 12 foot walkway around the pool, what is the largest pool diameter possible?

Area = πr^2
2400 = 3.14r^2
r^2 = 764
r = 27 2/3
Solve for r. d = 2r therefore d =
Assuming the walkway is completely around the pool and within the fence, largest pool diameter is d24. 
Area = πr^2
2400 = 3.14r^2
r^2 = 764
r = 27 2/3
Solve for r. d = 2r therefore d = 55 1/3
Assuming the walkway is completely around the pool and within the fence, largest pool diameter is d24.