Question

The area of a triangle is 90${cm}^2.$ If its base is $15cm,$ find its altitude.

Answer 1

Let the altitude of triangle be $hcm$

Given base of triangle $b=15cm$

Area of triangle is $90c{m}^2$

$⟹\frac{1}{2}bh=90$

$⟹h=\frac{180}{15}=12cm$

So the altitude is $12cm$