Question

A 12-foot ladder is leaning against a wall. The bottom of the ladder is 5 feet away from the bottom of the wall.

Approximately how high up the wall does the top of the ladder reach?

A.
2.4 feet

B.
7.0 feet

C.
13.0 feet

D.
10.9 feet
i think B not i'm not 100% sure plz help me and would u plz explain how u got the answer thank u :)

Answer 1

that is correct i took the test 10.9

Explanation:

Answer 2

The ladder is the hypotenuse.
One of the legs is 5 feet.
We need to find the height.

a^2 + 5^2 = 12^2
a^2 + 25 = 144
a^2 = 144 - 25
a^2 = 119
a = √119

a ≈ 10.9 feet

The ladder reaches up 10.9 feet.