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2 October, 07:03

The base of a ladder is placed 5 feet away from a 13 foot tall wall. What is the minimum length ladder needed to reach the top of the wall (rounded to the nearest foot) ?

A) 12 ft

B) 13 ft

C) 14 ft

D) 15 ft

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Answers (1)
  1. 2 October, 07:10
    0
    Apply the Pythagorean theorem

    a^2 + b^2 = c^2

    a = 5, b = 13.

    5^2 = 25, 13^2 = 169

    25 + 169 = 194

    square root 194 = 13.928, rounded to nearest foot = 14 ft.

    The minimum ladder length required to reach the top of the wall = 14 ft.
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