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A ladder 25 m long just reaches the top of a building 7 m high from the ground. What is the distance of the foot of the ladder from the building?
Option: 1
24 m

Option: 2
12 m

Option: 3
18 m

Option: 4
None of the above

Answers (1)

best_answer

$\text{hyp}^2=\text{base}^2+\text{altitude}^2$

$25^2=\text{base}^2+7^2$

$\text{base}^2=25^2-7^2$

$\text{base}^2=625-49$

$\text{base}^2=576$

$\text{base}=\sqrt{576}$

$\text{base}=24$

Posted by

Ritika Kankaria

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