plz help me .. I am really stumped!!!!!!! part of the set for a play is a big triangular piece of plywood. the area of the triangle is 20 square feet. the base is 3 feet longer than the height. what is the height of the triangle? round your answer to the nearest tenth of a foot. s it.........

f. 3 feet
g. 3.2 feet
h. 3.9 feet
j. 5 feet