Find area of a triangle if it's base is $18 cm$ and height is $9 cm$ .

Last updated on 17 November 2025

Given: $base = 18 cm$ , $height = 9 cm$

To find: Area of triangle

Solution:

\begin{array}{rcl} Area of Triangle & = & \frac{1}{2} \times base \times height \\ = & \frac{1}{2} \times 18 \times 9 \\ = & 9 \times 9 \\ = & 81 {cm}^{2} \end{array}

Therefore, the area of the given triangle is

81 {cm}^{2}

Find area of a triangle if it's base is 18cm and height is 9cm.