Robert needs enough mulch to cover the triangular garden shown below. If one bag of mulch covers 12 square feet, how many bags of mulch does he need to buy?
image of a triangle whose three sides are labeled 12 point 3 ft, side 11 point 3 ft, and 14 point 1 ft; a dashed line originates in the corner formed by the 12 point 3 ft side and the 11 point 3 ft side and extends to the 14 point 1 ft side; a box is in the right corner where the dashed line intersects the 14 point 1 ft side
5
11
4
6

Question

Robert needs enough mulch to cover the triangular garden shown below. If one bag of mulch covers 12 square feet, how many bags of mulch does he need to buy?
image of a triangle whose three sides are labeled 12 point 3 ft, side 11 point 3 ft, and 14 point 1 ft; a dashed line originates in the corner formed by the 12 point 3 ft side and the 11 point 3 ft side and extends to the 14 point 1 ft side; a box is in the right corner where the dashed line intersects the 14 point 1 ft side 
       5
        11
        4
        6