Question

The perimeter of a triangular field is 240 dm if two of its side is 78 cm and 15 cm find the length of the perpendicular of the side of the 50 cm from the opposite

Answer 1

perimeter = 240 = 78+50+Y

Y = 240 - 128 = 112

s = 1/2 the perimeter = 120

Area = sqrt [s (s-a)(s-b)(s-c)] = sqrt (120 x 70 x 42 x 8) = 1680

Area = 1680 = 1/2 x 50 x h

h = 67.2

this is the anser