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Jolie Roob

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3y ago
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14y ago

Using symbol "^" for powers. Use Pythagoras - a^2 + b^2 = c^2. This is valid for a triangle with a right angle, which should be more or less accurate for the case mentioned. The longest side, "c", is 20 in this case; the 16 (16 feet above the ground) can be either a or b. Solve for the remaining variable.

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Q: How far from the base if the building should a 20 foot ladder be placed in order to lean a point on the building 16 feet above the ground?
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A painter is painting a mural on a wall. He has a 20-foot ladder. He needs to work on a part of the wall that is 16 feet above the ground. How far from the base of the building should he place the foo?

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