The equation r = √F/5π relates to a radius r of a drainpipe in inches to the flow rate F of water passing through it in galls per minute.
1. Find the radius of a pipe that can carry 500 gallons of water per minute. Round your answer to the nearest whole.
2. An engineer determines that a drainpipe must be able to carry 1000 gallons of water per minute and instructs the builder to use an 8 inch radius pipe. Can a builder use two 4 inch radius pipes instead? Justify the answer.
