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.

## Class 6 (Foundation)

### Course: Class 6 (Foundation)>Unit 9

Lesson 3: Area of shapes on grids

# Perimeter & area

Perimeter is the distance around the outside of a shape. Area measures the space inside a shape. Learn how to calculate perimeter and area for various shapes. Created by Sal Khan.

## Want to join the conversation?

• How would I use multiplication instead of addition to find the perimeter?
• will tell you
• If you add each side, then is the total your area or (base x height)?
• When you add each side you get the perimeter.
When you multiply the base times height you get area.
For a 3-D figure you find the area of the base, then multiply it by the height, and you get the volume.
• How much is a right angle
• 90 degrees , you can tell a right angle because of the small box in the triangle
• what is the easyiest way to know all of this? im like so confused?
• Area=multiply base x height
Hope this helps! :)
• How do you find the area and perimeter of a square if it's sides are in a fraction.
• You would continue the same way you would if they were whole numbers. Multiple or add them depending on whether you are finding area or perimeter.
• what is the difference between the perimeter and area?
• Perimeter is the distance around the shape.
Area is the space inside the shape.
• Could I use division in perimeter and area
• In perimeter, no. In area, you would have to take the reciprocals of the two sides given and divide them as fractions, but that would be an extra step. So, basically, no :)
• How do you find area?
• for finding area you have to multiply the length and width