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Lesson 2: Count unit squares to find area

# Measuring rectangles with different unit squares

Sal finds area of a rectangle with different sized units. Created by Sal Khan.

## Want to join the conversation?

• What is a "voot" as used in the video at @ seconds?
• A "voot" is a made-up unit Sal made so we can understand the concept better.
• veet voot are they not the same?
• Yes, they are the same, but "voot" is singular and "veet" is plural, so you would say "one voot" or "two or more veet", just like "foot" or "feet".
• So, can you just use all six of the mini units that are 1 square foot and make a big square and do it the same for the other side? It will have the same amount of space, but different areas. Can we do that if it is possible?
• yes you can ,but both will have the same area because it has the same amount of space the only difference is that they will be measured in different square units
for example the measure of a square, measured in mm will be the same as measure in cm just that there will be a difference in number because u r using 2 different units but when u convert the answer u get in cm to mm the area will be the same
hope this helped
• At what is a feet? And why does it sound weird?
• It sounds weird because Sal is actually saying 'veet' and not 'feet.' Presumably 'veet' is the plural form of 'voot.' Sal is comparing feet and veet (a fictional unit) to show how we can use different units of area to measure the same object, but we have to take into account that the units are not of equal size.
• the word veet sounds weird...
• He actually means'feet', only he wrote it really
quickly,so it became'veet'.
• Does anyone know: Area and Perimeter of squares using guess and check?
• The area of a square is A=s^2 or length X width
The perimeter of a square is P= 2(L) + 2(W)
• yes you can ,but both will have the same area because it has the same amount of space the only difference is that they will be measured in different square units
for example the measure of a square, measured in mm will be the same as measure in cm just that there will be a difference in number because u r using 2 different units but when u convert the answer u get in cm to mm the area will be the same
I hope this helped
• Why do they call it a SQUARE foot? Why not just a foot?