Answer:
5 cm²
Step-by-step explanation:
The diagonal divides the rectangle into 2 right triangles with legs 5 and 2
The area (A ) of a triangle is calculated as
A = [tex]\frac{1}{2}[/tex] bh ( b is the base and h the height )
= 0.5 × 5 × 2 = 0.5 × 10 = 5 cm²
