Perimeter

Watch this lecture series introducing the perimeter, and complete the interactive exercises to practice calculating the perimeter of rectangles.

Practice

Find perimeter when given side lengths - Answers

1. The perimeter of the figure is 48 centimeters.

2. The perimeter of the quadrilateral is 32 centimeters.

3. The perimeter of the rectangle is 26 centimeters.

4. We can find the perimeter either by adding the lengths of all four sides:

11+11+17+17

Or by multiplying 2 by 11+17:

2 \times(11+17)

5. The perimeter of the rectangle is 98 meters.

6. The perimeter is 80 units.

7.  The perimeter of the regular triangle is 15 units.