The perimeter of the triangle is 17 / 8m, one side is 3/4m, the other is 4/7m. Find its third side.
December 31, 2020
P (triangle) = a + b + c
P = 17 / 8m
a = 3 / 4m
b = 4 / 7m
c = P-a-b = 17 / 8-3 / 4-4 / 7 = 17 / 8-6 / 8-4 / 7 = 11 / 8-4 / 7 = 77 / 56-32 / 56 = 45/56 (m)
Answer: 45 / 56m
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