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Lesson 3: Area of rectangles with fractional side lengths

# Finding area with fractional sides 2

Learn how to calculate the area of rectangles with fractional side lengths. Watch examples of this concept in action, and then see practice problems applying what was shown to solve similar problems.

## Want to join the conversation?

• khan academy is kinda better than school
• Khan Academy is way better than school.
• What about if the problem had a mixed number in it and no other fraction? How would you solve it, then?
• its simple, all you have to do is multiply it normally
• is it easy first time
• why was what at the end why what
• Why is the man talking so fast? How does he do that?
• Maybe because your playback speed in settings is on 2?
• What does it mean to square a meter.....?
that confuses me.
• Hi Determined!

"A squared metre" means that a square's sides, like the one depicted in Sal's video, are all exactly 1 metre after being measured. "m²" (metres squared), like a symbol, represents this fact (the area) about the square.

For example, let's say you had a big piece of square cardboard in real life. If you took a measuring stick and measured each of it's sides with the result being that each side is one metre in length, then you can use "m²" (1m x 1m) to label its area. Any calculations you do by splitting the "squared metered cardboard" into further fractions uses "m²" to let you know that the sides of the square (and therefore area) are always 1 metre. "m²" just represents the area of the square before it's divided into more fractions like Sal does in this video. :)
• no one likes school
• yes no one like school
(1 vote)
• just multiply it