Answer:
54 cm^2
Step-by-step explanation:
The area of a right triangle is the easiest triangle for which you can find the area.
The area of any triangle is Base * height / 2
The base and height of a right triangle are always the two sides that are not the hypotenuse. In this case
base = 9
height = 12
Area = 9 * 12/2
Area = 54 square cm.
Answer: A
