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The length of side c of your triangle is the square root of 20 inches, which is about 4.47 inches. That's if your right angle is bounded by the two sides whose lengths are given. This is the Pythagorean Theorem in action. It says the square of the length of the hypotenuse (c) is equal to the sums of the squares of the lengths of the other two sides. a2 + b2 = c2 22 + 42 = c2 4 + 16 = c2 20 = c2 c = sq. rt. 20 = about 4.47 Since the dimensions were given in inches, we need to add inches to that answer. Note: The square root of 20 is actually plus or minus about 4.47, but we generally set aside the negative number.

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Q: What is side c dimension of a right triangle if side a is 2 inches and side b is 4 inches?
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On a right angle triangle the dimension of side a is 2in and the dimension of side b is 4in what is the dimension of side c?

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