Oops! It looks like your security settings are blocking this video 🙁
If you are on a school computer or network, ask your tech person to whitelist these URLs:
*.wistia.com, fast.wistia.com, fast.wistia.net, embedwistia-a.akamaihd.net
Sometimes a simple refresh solves this issue. If you need further help, contact us.
What you will learn from this videoWhat you will learn
- We’ll learn that perimeter is the distance around a shape.
- That we can use perimeter to figure out unknown sides of an object.
- And that knowing the perimeter can help us build a fort, have a party, and even hang our favorite picture.
Explore Our Science Topics
What is the perimeter of a rectangle that has 2 sides labeled: 75 cm and 55 cm?
A shape has a perimeter of 190 cm. You labeled all sides but one and forget what the measurement is. You have these measurements written down: 30 cm, 40 cm, 20 cm, 70 cm. What is the length of the last side?
A rectangular dining room table has side lengths 3 m and 6 m. Jo multiplied 3 m × 6 m to find the perimeter of the table. Is Jo right? Tell why or why not.