Perimeter and area: the basics | Perimeter, area, and volume | Geometry | Khan Academy

What is the perimeter? 

• The amount of space that a figure takes up

• The distance around an object or shape

• All of the above

How do you calculate the perimeter? 

• Base x Height

• The sum of all of the lengths of the sides

• Length x Width

Tags

CCSS.3.MD.D.8

What is the perimeter of this rectangle? (Khan will confirm your answer!)

• 24

• 20

• 35

Tags

CCSS.4.MD.A.3

What is the length of each of the sides in the square? (Khan will confirm your answer)

• 6

• 9

• 18

Tags

CCSS.HSG.CO.C.11

What is the formula for area of a rectangle or square? 

• Area = Length x width

• Area = Sum of all of the side lengths

   

• Area = length x width/2

Tags

CCSS.3.MD.C.7B

CCSS.4.MD.A.3