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One side of an isosceles triangle is 15 cm shorter than the other 2 sides. The perimeter is 120 cm. How long are the sides of the triangle?

S = length of the short side in cm. Since the triangle has three sides:

S + (S + 15) + (S + 15) = 120

Solve for S.

I hope this helps. Thanks for asking

52.5

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