Question

Find the area of the triangle.

Answer 1

`10units^2`

Explanation:

Unshaded Right Triangle

`A=(ab)/(2) \\=(4*2)/(2) \\=4units^2`

Whole Triangle

`A=(ab)/(2) \\=(4*7)/(2)\\ =14units^2`

Shaded triangle

`14-4=10units^2`

If you dont want as many steps, just calculate the triangle and dont worry about the right triangle the formula is

`A=(h_(b)b)/(2) \\=(4*5)/(2)\\ =10units^2`