The first side of the triangle is 67 cm, and the second is 25 cm shorter than the first.
| June 16, 2021 | education
The first side of the triangle is 67 cm, and the second is 25 cm shorter than the first. Find the third side of a triangle if its perimeter is 186 cm.
Denoting the third side of the triangle through x, we compose the equation for the length of its perimeter:
x + 67 + (67 – 25) = 186;
Calculate the length of the third side of the triangle x:
x = 186 – 67 -42 = 77 (cm).
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