This forms a right angle triangle.
a^2 + b^2 = c^2
a^2 + 12^2 = 20^2
a^2 + 144 = 400
a^2 = 256
a = 16
A painter leans a 20-ft ladder against a building. The base of the ladder is 12 ft from the building. To the nearest foot, how high on the building does the ladder reach?
2 answers
a=16
2 answers