Question

What is a perimeter of a equilateral triangle, if each side of a triangle is 5 3/10 cm? ​

Answer 1

Answer:

15.9 cm

each side's length= 5 3/10 cm

so triangle has 3 sides and equilateral triangle has all the sides equal so to find a equilateral triangle 's perimeter we multiply one side's length by 3

so 5 3/10= 53/10 cm

so perimeter of triangle = 53*3/10

= 15.9 cm