2b) A farmer is building a pen inside a barn. The pen will be in the shape of a right triangle.

The farmer has 14 feet of barn wall to use for one side of the pen and wants another side of the pen to be 15 feet long.

a. To the nearest tenth of a foot, find all possible lengths for the third side of the triangle.

b. The farmer wants the area of the pen to be as large as possible. What length should he choose for the third side? Justify your answer.

In may you used 400 kilowatt-hours of energy for electricity. a. calculate the total electrical energy use in joules. b. calculate your average power use in watts. c. assume that your power supplier generates electricity by burning oil. note that 1 liter of oil releases 12 million joules of energy. how much oil is needed to generate the electricity you use? give your answer in both liters and gallons. a. the total electrical energy use was nothing _ joules. (type an integer or a decimal.) b. the average power use is nothing _ watts. (round to the nearest whole number as needed.) c. to generate the electricity you used, nothing _ l is needed. (round to the nearest whole number as needed.) to generate the electricity you used, nothing _ gal is needed. (round to two decimal places as needed.)