What is the area of triangle ABD?
7 cm 2
3.5 cm 2
6 cm 2
4.5 cm 2

Answer:
4.5cm^2
Step-by-step explanation:
To find area of a triangle the formula is --> 1/2 base times height
so 3cm x 3cm = 9cm and divide by 2 --> 4.5 cm^2