Question

8. The perimeter of an equilateral triangle is 45 cm. 9-15

Write an equation, and solve it, to determine the length of one side of the triangle.
a. 3x = 45
b. 15 cm
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Answer 1

a. 3x = 45

15cm

Explanation:

Given the perimeter of an equilateral triangle = 45cm .

Using the equation

3x = 45

Divide both sides by 3

x = 45/3

= 15cm

The length of each side of the triangle is 15cm because an equilateral triangle has its three sides equal