Answer:
H = 19 cm
B = 17 cm
Step-by-step explanation:
A = (H x B) / 2 (formula for the area of a triangle)
161.5 = ((X + 2)(X)) / 2 (with X acting as the base)
323 = X^2 + 2X
0 = x^2 + 2x - 323
(X - 17) (X + 19) = 0
X = 17 or X = -19
You can't have a negative number as a side length so -19 doesn't work.
Because the height is larger than the base, you add the 2 to the one you will use as the height. Then just add the units (cm) because the area is in cm squared.
