Question 1165616
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Assuming level ground and a vertical wall, the ground, the wall, and the ladder form a right triangle, with the ladder as the hypotenuse.<br>
Use the Pythagorean Theorem to solve the problem.<br>
{{{c^2 = a^2+b^2}}}<br>
{{{10^2 = 3^2+x^2}}}<br>
You can do the arithmetic....<br>