Posted by **Christina** on Thursday, February 21, 2008 at 7:10pm.

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**, Thursday, February 21, 2008 at 7:14pm
Think about the Pythagorean theorem. The ladder length is the hypotenuse.

- Geometry -
**Christina**, Thursday, February 21, 2008 at 7:21pm
Okay.. whats the Pythagorean theorem again?

- Geometry -
**drwls**, Thursday, February 21, 2008 at 7:24pm
a^2 + b^2 = c^2

c is the hypotenuse and a and b are the perpendicular sides of a right triangle

- Geometry -
**Christina**, Thursday, February 21, 2008 at 7:30pm
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**, Monday, February 25, 2008 at 9:37pm
yep

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