ISEE Middle Level Math : How to find the perimeter of a trapezoid

Study concepts, example questions & explanations for ISEE Middle Level Math

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Example Questions

Example Question #1 : How To Find The Perimeter Of A Trapezoid

The perimeter of the following trapezoid is equal to 23 cm. Solve for . (Figure not drawn to scale.)

Isee_mid_question_52

Possible Answers:

Correct answer:

Explanation:

The perimeter is equal to the sum of all of the sides.

Example Question #11 : Trapezoids

Find the perimeter of the trapezoid:
Question_12

Possible Answers:

Correct answer:

Explanation:

The perimeter of any shape is equal to the sum of the lengths of its sides:

Example Question #1 : How To Find The Perimeter Of A Trapezoid

You recently bought a new bookshelf with a base in  the shape of an isosceles trapezoid. If the small base is 2 feet, the large base is 3 feet, and the arms are 1.5 feet, what is the perimeter of the base of your new bookshelf?

Possible Answers:

Cannot be determined from the information provided.

Correct answer:

Explanation:

You recently bought a new bookshelf with a base in  the shape of an isosceles trapezoid. If the small base is 2 feet, the large base is 3 feet, and the arms are 1.5 feet, what is the perimeter of the base of your new bookshelf?

To find the perimeter of a bookshelf, we need to add up the lengths of the sides.

We know the two bases, we just need to add the lengths of the arms. 

So, our answer is 8ft

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