Question

A 13 meter ladder is leaning against a wall. It reaches 12 meters up the wall How far is the base of the ladder from the base of the wal

Answer 1

5

Explanation:

Pythagorean Theorem. The 13-meter ladder is leaning against a wall, so it's the hypotenuse.

It reaches 12 meters up, so 12 is one leg.

`a^(2) +b^(2)=c^(2)`

`a^(2)+12^(2)=13^(2)`

`a^(2)+144=169`

`a^(2)=25`

a = 5