The dimensions of triangle A are three times the dimensions of triangle B. The area of triangle B is 15 cm2.
What is the area of triangle A?
Since the dimensions of triangle A are three times those of triangle B, the ratio of their areas would be 3^2 = 9.
Therefore, the area of triangle A is 9 times the area of triangle B:
Area of triangle A = 9 * 15 cm^2 = 135 cm^2
So, the area of triangle A is 135 cm^2.