Question

Triangle A is a scaled version of triangle B. The dimensions of triangle A are three times the dimensions of triangle B. The area of triangle A is 54 sq cm.

Answer 1

9 * 12 = 108
the base is 9 and the height is 12
now the formula for the area of a triangle is 1/2 *(b)*(h)

multiply 9 * 3 = 27
multiply 12 * 3 = 36

multiply base = 27 * height = 36 
27 * 36 = 972
now divide that by 2
486 sq cm.