The formula for the perimeter (P) of a triangle is P = a + b + c. If the perimeter is 120 ft, a = 30 ft and b = 40 ft, what is the length of side c?Answer: ___________
What will be an ideal response?
P = a + b + c
120 = 30 + 40 + c
120 - 70 = 70 - 70 + c
50 ft= c
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