A fountain is at the center of a circular pool of radius r ft, and the area is enclosed within a circular railing that is 45.0 ft from the edge of the pool.
If the total area within the railing is 11,500ft² , what is the radius of the pool? See Fig. 3.45.

Fig.3.45

Transcribed Image Text:

Fountain r 45.0 ft Pool Railing