Question

Equilateral trangle has side (3x+2)cm if perimeter 60cm find side

Answer 1

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.