## Ryan06202011 Group Title A ladder is propped up 3 feet away from the side of a building. The length of the ladder is 8 feet. What is the height of the building? Round to the nearest tenth. A. 8.5 ft B. 7.4 ft C. 7.6 ft D. 9 ft one year ago one year ago

1. across Group Title

Wow... those are very short buildings...

2. Ryan06202011 Group Title

lol, right

3. Ryan06202011 Group Title

i thought it would be C but i need a 2nd opinion

4. across Group Title

Use the Pythagorean theorem$a^2+b^2=c^2,$with $$a=3$$ and $$c=8$$.

5. surdawi Group Title

|dw:1349966096104:dw|

6. surdawi Group Title

$x ^{2}=8 ^{2}-3 ^{2}=64-9$ $x ^{2}=55$ $\sqrt{x ^{2}}=\sqrt{55}$ x=7.4

7. Ryan06202011 Group Title

thx