Question

Question 11(b)

A piece of string is 30 cm long. What will be the length of each side if the string is used to form an equilateral triangle?

Answer 1

The string is bent in the form of an equilateral triangle.

So, the perimeter of an equilateral triangle = length of the string.

$\Rightarrow$ 3$\times$ Length of side = 30 cm.

$\Rightarrow$ Length of side = $\frac{30}{3}$ = 10 cm.

Thus, the length of each side of equilateral triangle is 10 cm.