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

C) 14 ft

Step-by-step explanation:

Let l be the length of ladder ,

The distance of ladder from the wall = 13 ft,

And, the height of wall = 5 ft,

Since, the length of ladder is minimum when the wall is straight,

In this condition,

Hence, the approximate minimum length of the ladder is 14 ft.

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step-by-step explanation: