If you're seeing this message, it means we're having trouble loading external resources on our website.

If you're behind a web filter, please make sure that the domains *.kastatic.org and *.kasandbox.org are unblocked.

Main content

MAP Recommended Practice

Unit 24: Lesson 7

Perimeter
Math
MAP Recommended Practice
Measurement and Data 189-200
Perimeter
© 2023 Khan AcademyTerms of usePrivacy PolicyCookie Notice

Find perimeter when given side lengths

CCSS.Math: 3.MD.D.8
Google Classroom

Problem

One side of a rectangle is 8 units. Another side is 5 units.
What is the perimeter of the rectangle?
  • Your answer should be
  • an integer, like 6
  • a simplified proper fraction, like 3, slash, 5
  • a simplified improper fraction, like 7, slash, 4
  • a mixed number, like 1, space, 3, slash, 4
  • an exact decimal, like 0, point, 75
  • a multiple of pi, like 12, space, start text, p, i, end text or 2, slash, 3, space, start text, p, i, end text
units
Stuck?
Stuck?