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When a painter leans a 20 foot ladder against a building the base of the ladder is 12 feet from the building to the nearest foot how high on the building does the ladder go?
Wiki User
∙ 14y ago
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General Schiller
Wiki User
∙ 14y agoProviding that the ladder is on level ground, use Pythagoras' Theorem:
202-122 = height of building2
400-144 = 256.
The square root of 256 is 16
The ladder reaches 16 feet of the building exactly.
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A 48-foot ladder is leaning against the wall of a building The top of the ladder is touching the ledge of a window that is 45 feet off the ground About how far is the base of the ladder from the wal?
93
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If a painter has a ladder 20 feet long .How high will the ladder reach if he set the base 2 feet from the building?
19.8997487421324 ft This 19 ft and around 10.8 inches. You need to use the following rule about right angled triangles, that the sum of the squares of the two shorter sides is equal to the square of the hypotenuse (the long side) In this example, the hypotenuse is the ladder itself, resting at an angle against the wall. So the square of the ladder length is 400 You know that the base of the triangle is the distance from the wall (2 feet) which squared is 4. Subtract 4 from 400 and you get 396. The square root of this is 19.9 feet or 19 feet and 10.8 inches. However, note that a ladder should normally be placed at an angle of around 15 degrees from the vertical. A two foot base is too steep for safe use. See the discussion for more on this. You calculate this using the following formula:
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How far should a 12-foot extension ladder should be placed against a wall?
3 ft
If A painter leans a 34ft ladder against a building The base of the ladder is 16ft from the building To the nearest foot how high on the building does the ladder reach?
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A ladder that leans against a building makes an angle of 49 degree with the ground and reaches a point on the building 12m above the ground Find the length of the ladder to the nearest meter?
The ladder forms a right angle with the building: the ground and the building forming the right angle and the ladder forming the hypotenuse. If the length of the ladder is L metres, then sin(49) = 12/L So L = 12/sin(49) = 15.9 = 16 metres.
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A 14 foot ladder is leaning against a building the ladder makes a 45 degree angle with the building how fa?
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