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Monica Abbott

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14y ago

Use Pythagoras' theorem to solve this problem:

a2+b2 = c2 (the ladder)

c2-a2 = b2 (height of wall)

100-16 = 84. The square root of 84 is 9.16515139

Therefore the ladder will reach 9 feet up the wall to the nearest foot.

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Q: A 10-ft ladder leans against a wall so that the base of the ladder is 4 ft from the wall How high up on the wall will the ladder reach to the nearest foot?
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