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October 25, 2014

October 25, 2014

Posted by **Marco** on Monday, December 17, 2012 at 8:03pm.

Do I multiply 20,x 15?

I don't know how to do the problem

- Math -
**Ms. Sue**, Monday, December 17, 2012 at 8:07pmSince you're trying to find one leg of a right triangle, you need to use the Pythagorean Theorem. The ladder is the hypotenuse of this triangle.

a^2 + b^2 = c^2

15^2 + b^2 = 20^2

225 + b^2 = 400

b^2 = 175

b = 13.228 = 13.2 meters

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