A triangle had height of 15 in and area of 120in2. What is the length of the base?

Area of triangle = (base*height) / 2

120 = (b*15) / 2

120*2 = 15b

240 = 15b

15b = 240

b = 240/15

b = 16

The base is 16 inches

As a check

Area = (base*height) / 2

Area = (16*15) / 2

Area = 240/2

Area = 120

The answer is confirmed