Question

first, find the area of the rectangle. area of rectangle = 21 square units now, find the area of the triangle. area of triangle = square units

Explanation:

Step1: Identify triangle base and height

From the grid, base = 3 units, height = 3 units.

Step2: Calculate triangle area

Area = $\frac{1}{2} \times \text{base} \times \text{height} = \frac{1}{2} \times 3 \times 3 = 4.5$

Answer:

4.5