How to work out the length of sides in scalene triangle if perimeter is 38
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Add up the lengths of the three side lengths to find the perimeter. Recall that the perimeter P = a + b + c. Now that you know the lengths of sides a, b and c, you simply need to add the lengths together to find the perimeter. In our first example,P = 3 + 4 + 5, or 12.
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