The bases of an isosceles trapezoid are 3 cm and 5 cm, define the side of the trapezoid if the perimeter is 15 cm.

univerkov | July 6, 2021 | education

Since the trapezoid is isosceles, then its sides are equal. Therefore, to find the length of one side, it is necessary to subtract the lengths of its bases from the perimeter of the trapezoid and divide the resulting value in half:
(15 cm – 3 cm – 5 cm) / 2 = 7 cm / 2 = 3.5 cm.
Answer: the side of the trapezoid is 3.5 cm.

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