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A plastic board that is 15 feet long is leaning against a wall perpendicular to the ground. The point at which the wooden board touches the wall is 12 feet above the ground. How far away is the base of
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3 votes
A plastic board that is 15 feet long is leaning against a wall

perpendicular to the ground. The point at which the wooden
board touches the wall is 12 feet above the ground. How far
away is the base of the board from the bottom of the wall?
feet

User JustTB
by
5.6k points

1 Answer

3 votes

Answer:

9 ft

Explanation:

a²+b²=c²

a²+12²=15²

a²+144=225

225-144=81

√81=9

User Flohall
by
4.7k points
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