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

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

vespersaviour · Answer

I think its C. I dont know if this is correct but
12^2 = 144
5^2 = 25
144 + 25= 169
$$\sqrt{169}=13$$
Which is C.

xxanntdmxx · Answer

a^2 + 5^2 = 12^2
a^2 + 25 = 144
a^2 = 144 - 25
a^2 = 119
a = √119

a ≈ 10.9 feet

xxanntdmxx · Answer

so im pretty sure its D.
:)

vespersaviour · Answer

Thanks