The perimeter of a triangle is 40 centimeters. If two sides are equally long and the third side is 7 centimeters longer than the others, find the lengths of the three sides.

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RmLuma asked Aug 26, 2023

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The perimeter of a triangle is 40 centimeters. If two sides are equally long and the third side is 7 centimeters longer

than the others, find the lengths of the three sides.

Mathematics
high-school

RmLuma asked Aug 26, 2023

by RmLuma

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Answer:

L1 = L2 = 16.5 cm and L3 = 7cm

Explanation:

Triangle perimeter = L1 + L2 + L3 = 40 cm

L1 = L2 = L

L3 = 7

Then:

40 = 2L +7

33 = 2L

L = 33/2

L = 16.5 cm

David Shim answered Aug 31, 2023

by David Shim

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