If A 20 foot ladder is leaning against a wall, if the ladder is 12 feet from the base of the wall, how high above the ground does the ladder touch the wall?
The hypotenuse is the ladder. One side of the right triangle is 12 feet. Given the equation a^2 + b^2 = c^2, we can determine 12 + b^2 = 20 b^2 = 8 b = 2.83 CHAcha!
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