Question

The base of an isosceles right triangle is $30cm$its area is

Answer 1

Given, the base of an isosceles right triangle is $30cm$

Since, it is an isosceles right triangle, So, its base is equal to its height.

Thus, $base=height=30cm$

We know that,

$\begin{array}{rcl}Areaofatriangle& =& \frac{1}{2}\times base\times height\\ & =& \frac{1}{2}\times 30\times 30\\ & =& 15\times 30\\ & =& 450c{m}^2\end{array}$

Hence, the area of the given triangle is $450c{m}^2$