The dimensions of triangle a are four times the dimensions of triangle b. the area of triangle b is 15cm 2. what is the area of triangle a

The dimensions of all parts of Triangle B is 4 times that of A
A = 1/2 b * h for the given triangle
A = 1/2 * 4b * 4h
A = 1/2 * 16 * b * h
A = 16 * (1/2 * b * h)

The area of the new triangle is 16 times the old.
16 * 15 = 240 cm^2
240 cm^2 <<<<< answer