By "side" I assume you mean one of the bases. If the other base is x, then we have
(6+x)/2 * 13 = 91
(6+x)/2 = 7
6+x = 14
x = 8
A trapezoid has an area of 91 cm2. If the height is 13 cm and one side is 6 cm, what is the length of the other side?
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