Question

Calculate the height of an equilateral triangle whose perimeter is $60cm$. Then, $100$ times the height is

Answer 1

Perimeter of the equilateral triangle $=3a=60cm$
$\Rightarrow a=20cm$
Height of an equilateral triangle of side $a=\frac{\sqrt{3}}{2}a$
Hence, height of this triangle $=\frac{\sqrt{3}}{2}\times 20=17.32cm$
$\therefore 100$ times the height will be $1732cm$