The base of an isosceles trapezoidal prism has parallel sides measuring 7 cm and 9 cm. The non-parallel sides measure 6 cm each. What is the perimeter of the trapezoidal base?

38 cm

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48 cm

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18 cm

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28 cm

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Solution

The correct option is D
28 cm

Perimeter of the base = sum of the lengths of both parallel and non parallel sides

So, perimeter of the base =lengths of parallel sides + lengths of non parallel sides

Perimeter of the base = 7 cm + 9 cm + 6 cm +6 cm

Perimeter of the base = 7 cm + 9 cm + 6 cm +6 cm = 28 cm

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