Homework Help: math

Posted by Anonymous on Thursday, March 26, 2009 at 4:21pm.

A ladder 8ft long leans against a wall. It rests on the ground 2ft from the wall. How high on the wall does the ladder reach?

math - Ms. Sue, Thursday, March 26, 2009 at 4:29pm
Use the Pythagorean Theorem. Let a = the height on the wall.

a^2 + b^2 = c^2
a^2 + 4 = 64
a^2 = 60
a = 7.75 feet

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