For this problem a and b represent the lengths of the legs of a right triangle, and c represents the length of the hypotenuse. Find a if $c = 21$ and $b = 11$ inches. Express the answer in simplest radical form.

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The Answer of For this problem a and b represent the lengths of the legs of a right triangle, and c represents the length of the hypotenuse. Find a if $c = 21$ and $b = 11$ inches. Express the answer in simplest radical form.

For This Problem a and B Represent the Lengths of the Legs