A ladder 39 feet long leans against a building and reaches the ledge of a window. If the foot of the ladder is 15 feet from the foot of the building, how high is the window ledge about the ground?

Question

Brennan Wood

Mathematics

4 September, 00:44

A ladder 39 feet long leans against a building and reaches the ledge of a window. If the foot of the ladder is 15 feet from the foot of the building, how high is the window ledge about the ground?

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Answers (2)

Know the Answer?

Angelo Hayden · Answer 1

41.8 feet will be your answer ... I hope so anyways

Phillip Holloway · Answer 2

First you need to use the Pythagorean theorem (a²+b²=c²). Let's use 39 feet as a and 15 as b. c is the answer. So we have 39² + 15² = c². Now find what the ² 's equal. 1521+225=1746. Now square root 1746. Which will equal 41.7851648316. I will round it to the nearest whole number. 42. If you need it rounded to nearest 10th then it will be 41.8.