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Posted by **Raymond** on Saturday, December 3, 2011 at 10:57am.

- Math -
**Ms. Sue**, Saturday, December 3, 2011 at 12:46pmThe ladder, the ground, and the wall make a right triangle. Use the pythagorean theorem to find the height.

a^2 + b^2 = c^2

a^2 + 4^2 = 20^2

a^2 + 16 = 400

a^2 = 384

a = 19.5959

- Math -
**roy**, Monday, June 11, 2012 at 6:46pm16

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