A rain gutter is made from sheets of aluminum that are 20 inches wide by turning up the edges to form right angles. Determine th
e depth of the gutter that will maximize its cross sectional area and allow the greatest amount of water to flow. What is the maximum cross-sectional area?
Answer: D.) 10 2/3 square feet Step-by-step explanation: The area will change by multiply the area by 4/9 and you get 32/3 = 10 and 2/3 (because 10 = 30/3)
