Question

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?

Answer 1

am i heading in right way ?

Answer 2

the base of ladder is 12 ft away from ladder ?

Answer 3

sorry * from building !

Answer 4

looks ok. you can use pythagoras to find the other leg.

(or notice you have a scaled 3-4-5 right triangle)