# ISEE Lower Level Quantitative : How to find perimeter

## Example Questions

### Example Question #1 : How To Find Perimeter

Find the perimeter of the following trapezoid.

Explanation:

In order to find the perimeter of the trapezoid, we have to add up all the outer sides:

### Example Question #2 : How To Find Perimeter

Find the perimeter of the following trapezoid.

Explanation:

In order to find the perimeter we must add up all the outer sides of the trapezoid.

### Example Question #3 : How To Find Perimeter

Daria found the perimeter of the below trapezoid to be 29 inches.

What is the length of the missing side?

Explanation:

To find the perimeter of a trapezoid, add up the lengths of its four sides. In the given trapezoid,

To find the missing side, combine like terms and solve for :

The missing side of the trapezoid is  long.

### Example Question #4 : How To Find Perimeter

What is the perimeter of the above trapezoid?

Explanation:

To find the perimeter of a trapezoid, add up the lengths of the four sides. In the given trapezoid,

### Example Question #5 : How To Find Perimeter

Angela found the perimeter of the trapezoid below to be 35 cm.

What is the length of the missing side?

Explanation:

To find the perimeter of a trapezoid, add up the lengths of the four sides. In the given trapezoid,

To find the missing side, combine like terms and solve for

The length of the missing side is thus .

### Example Question #6 : How To Find Perimeter

What is the perimeter of the above trapezoid?