Triangle ABC has side lengths 5 inches, 7 inches, and 10 inches. Triangle JKL has side lengths 12 inches, 35 inches, and 37 inches. Triangle PQR has side lengths 13 inches, 10 inches, and 16 inches.

David is spreading mulch on a triangular area of his flower bed. the coordinates of the vertices of the area are (1, 3), (9, 3), and (4, 6). what is the area of the triangle if each square has an area of 3 square feet?

Awater holding tank measures 105 m long, 50 m wide, and 8 m deep. traces of mercury have been found in the tank, with a concen- tration of 60 mg/l. what is the total mass of mercury in the tank? answer in units of kg.

1yd 1 ft = 1 1/12 1 1/3 1 1/2 1 1/6