Members of the fire department lean a 30-foot ladder against a building. The side of the building is perpendicular to the level ground so that the base of the ladder is 10 feet away from the base of the building. To the nearest foot, how far up the building does the ladder reach?
Can you please explain with some details?
To get this you just have to square 30 then square 10 then subtract the answer you get the find the square root of what you get so 900-100=800 the square root of 800 is 28.3.
