Completion requirements
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.