Posted by Christina on .
The foot of a ladder is placed 6 feet from a wall. If the top of the ladder is 8 feet up on the wall, how long is the ladder?

Geometry 
drwls,
Think about the Pythagorean theorem. The ladder length is the hypotenuse.

Geometry 
Christina,
Okay.. whats the Pythagorean theorem again?

Geometry 
drwls,
a^2 + b^2 = c^2
c is the hypotenuse and a and b are the perpendicular sides of a right triangle 
Geometry 
Christina,
Okay i think i got it.
a^2 + b^2 = c^2
6^2 + 8^2 = c^2
36 + 64 = c^2
sqrt of 100 = sqrt of c^2
10ft = C
Is that right? 
Geometry 
Lauren,
yep