A gardener is reseeding a city park that has the shape of a triangle with a base of 159 feet and a height of 200 feet, the third side is 250 feet long. a.) one bag of grass seed covers 3750 sq feet and costs $27.50. how many bags are needed? what is the total cost? b.) wire fencing costs $23.19 for each 50 foot roll. How much does it cost to buy fencing to enclose area? c.) fence posts cost $31.19 each and should be placed every 5 feet. how many posts are needed and how much will they cost altogether?