12. Some lifeguards want to construct a rectangular safe swimming area along a beach with a string of floats. Only three sides of the rectangular area will need floats, since the beach will form the fourth side. If the lifeguards use 800ft of floats, what is the maximum area possible? 80000 ft² O40000 ft² O2000 ft² O 20000 ft²

Mac is about to sue his contractor who promised to install a water tank that holds 590 gallons of water. Mac knows that 590 gallons is the capacity of a tank that holds 79 cubic feet. The cylindrical tank has a radius of 3 feet and height of 2 feet 8 inches. Does the evidence indicate Mac can win the case against the contractor if it goes to court? Does the evidence indicate Mac can win the case against the contractor if it goes to court? Select the correct choice below and fill in the answer box within your choice. (Round to the nearest whole number as needed.) No, the water tank is about Yes, the water tank is about No, the water tank is about Yes, the water tank is about cubic feet too small. cubic feet too large. cubic feet too large. cubic feet too small.

3. You're creating a boat out of a sheet of paper. You want the boat to hold maximum weight possible. What would be the height of the side of the boat?

A rectangular plot of farmland will be bounded on one side by a river and on the otherthree sides by a single-strand electric fence. With 800 m of wire at your disposal, what isthe largest area you can enclose?