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

## Example Questions

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### Example Question #1 : Trapezoids

Find the perimeter of the trapezoid.

Note: Figure not drawn to scale.     Explanation:

To find the perimeter of a trapezoid, add the lengths of the sides: ### Example Question #2 : Trapezoids Find the perimeter of the given trapezoid if 19

20

18

14

20

Explanation:

To find the perimeter, we must find the sum of the OUTER edges:  Notice that the height wasn't included in our calculation.

### Example Question #3 : Trapezoids Find the perimeter of the given trapezoid if 24

31

20

27

27

Explanation:

In order to find the perimeter of the trapezoid, we must find the sum of the outer edges:  Notice that we didn't use height in our calculation.

### Example Question #4 : Trapezoids Find the perimeter of the given trapezoid if 54

22

44

56

56

Explanation:

To find the perimeter, we need to find the sum of the outer edges:  Notice that we didn't use height in our calculation.

### Example Question #1 : Trapezoids

Measured in units, the bases of a trapezoid are and , the lengths are , and the height is unknown.  What is the perimeter of the trapezoid in units?   Impossible to calculate.  Explanation:

The perimeter is solved by adding the two bases together, and , along with both the lengths, .

Therefore the equation becomes, ### Example Question #6 : Trapezoids

Measured in units, the bases of a trapezoid are and , the lengths are , and the height is unknown.  What is the perimeter of the trapezoid in units?   Impossible to calculate.  Explanation:

The perimeter is solved by adding the two bases together, and , along with both lengths, .

Therefore the equation becomes, ### Example Question #7 : Trapezoids

Measured in units, the bases of a trapezoid are and , the lengths are , and the height is unknown.  What is the perimeter of the trapezoid in units?  Impossible to calculate.   Explanation:

The perimeter is solved by adding the two bases together, and , along with both lengths, .

Therefore the equation becomes, ### Example Question #8 : Trapezoids

Measured in units, the bases of a trapezoid are and , the lengths are , and the height is unknown.  What is the perimeter of the trapezoid in units?   Impossible to calculate.  Explanation:

The perimeter is solved by adding the two bases together, and , along with both the lengths, .

Therefore the equation becomes, ### Example Question #9 : Trapezoids

Measured in units, the bases of a trapezoid are and , the lengths are , and the height is unknown.  What is the perimeter of the trapezoid in units?    Impossible to calculate. Explanation:

The perimeter is solved by adding the two bases together, and , along with both the lengths, .

Therefore the equation becomes, ### Example Question #10 : Trapezoids

Measured in units, the bases of a trapezoid are and , the lengths are , and the height is unknown.  What is the perimeter of the trapezoid in units?

Impossible to calculate.     The perimeter is solved by adding the two bases together, and , along with both the lengths, .  