Equilateral trangle has side (3x+2)cm if perimeter 60cm find side
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Answer:
Given side = 3x + 2 cm
Given perimeter = 60 cm
Perimeter of eq. triangle = s+ s+ s
60 = 3x+2 +3x +2 +3x +2
60 = 9x + 6
60 -6 = 9x
54 = 9x
54/9 = x
6 = x
Side of triangle = 3x + 2
= 3×6 +2
= 18 + 2
= 20 cm
Therefore the side of given triangle is 20 cm.
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