Question

The area of the triangle $ABC$ as shown in the diagram is.

• A. $6$ sq. units
• B. $9$ sq. units
• C. $18$ sq. units

Answer 1

The correct option is B $9$ sq. units


The triangle $ABC$ is a right triangle.
To find its area, we need the length of a base and its height.
Here, if we consider $BC$ to be a base, then $AB$ is the corresponding height.
Counting the length of the base and the height we observe:
$AB=3$ units and $BC=6$ units.
$\therefore \text{Area}\Delta ABC=\frac{1}{2}\times AB\times BC$
$\Rightarrow \text{Area}\Delta ABC=\frac{1}{2}\times 3\times 6$
$=9$ sq. units