Question

Find the length of a side of an equilateral triangular garden whose perimeter is 66 m.

• A. 66 m
• B. 11 m
• C. 22 m
• D. 3 m

Answer 1

The correct option is C

22 m

Given, perimeter = 66 m.
Let one side of the equilateral triangle be $s$ m.
We know, the lengths of all sides of an equilateral triangle are equal.
$\therefore$ perimeter = s + s + s
$\Rightarrow$ 3s = 66 m
$\Rightarrow$ s = $\frac{66}{3}$ = 22 m.
Hence, the length of a side of the given equilateral triangle is 22 m.