# The bases of the isosceles trapezoid are 3 and 17, the lateral side is 25. Find the length of the diagonal of the trapezoid.

July 29, 2021 | education

| The length of the diagonal of an isosceles trapezoid is calculated by the formula: d = √c² + a * b, where d is the diagonal of an isosceles trapezoid, c is the side, a is the upper base, b is the lower base. a = 3, b = 17, c = 25, we substitute in the formula.

d = √25² + 3 * 17 = √625 + 51 = √676 = 26 is the length of the diagonal of an isosceles trapezoid.

Answer: 26.

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