Is there a trick for telling when you are doing area or perimeter? If so, what is this trick? I would really like to know. I'm guessing there are multiple.

That's a hard question to answer...but take in mind that perimeter is the outside of a 2-D shape will area is the land or whatever that it covers. For example a square fence with the dimensions of 12 ft by 12 ft. You can multiply and find out how many ft^2 can fit inside the fence or you can see how much you need to make the outside edges or fences.

it totally confused me that video I mean I thought from the scale he drew it that fibbonachi drive was correct

To look at the drawings is to _estimate_ the size of something. You need to calculate the exact area using the numbers provided to work out which one is bigger. I hope this helps.

is the area the length times width

Yes. But only rectangles and squares. LxW is the formula for the squares and rectangles; others, like circles and trapezoids, have different formulas.

Main content

3rd grade

Course: 3rd grade > Unit 10

Lesson 4: Multiply to find area

Comparing areas of plots of land

Name: Comparing areas of plots of land
Uploaded: 2013-09-28T01:22:19Z
Description: Sal finds area of two rectangles to solve a word problem.

CCSS.Math:

3.MD.C.7

3.MD.C.7b

Google Classroom

Sal finds area of two rectangles to solve a word problem. Created by Sal Khan.

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kaiaduett
Posted 7 years ago. Direct link to kaiaduett's post “i can't see corectlly, bu...”
i can't see corectlly, but are those spaces of land the same shape?
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- COLTONT
  Posted 2 months ago. Direct link to COLTONT's post “No it is not”
  No it is not
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luca.gonzalezgauss
Posted 7 years ago. Direct link to luca.gonzalezgauss's post “Is there a trick for tell...”
Is there a trick for telling when you are doing area or perimeter? If so, what is this trick? I would really like to know. I'm guessing there are multiple.
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- Jesus E. Santana Colon
  Posted 7 years ago. Direct link to Jesus E. Santana Colon's post “That's a hard question to...”
  That's a hard question to answer...but take in mind that perimeter is the outside of a 2-D shape will area is the land or whatever that it covers. For example a square fence with the dimensions of 12 ft by 12 ft. You can multiply and find out how many ft^2 can fit inside the fence or you can see how much you need to make the outside edges or fences.
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Tamara Jardack
Posted 6 months ago. Direct link to Tamara Jardack's post “why don't you give people...”
why don't you give people 2
chances to answer a question
why only once.
why not twice.
please answer!
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Rasheda Robinson
Posted 9 years ago. Direct link to Rasheda Robinson's post “it totally confused me th...”
it totally confused me that video I mean I thought from the scale he drew it that fibbonachi drive was correct
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- Marc
  Posted 9 years ago. Direct link to Marc's post “To look at the drawings i...”
  To look at the drawings is to estimate the size of something. You need to calculate the exact area using the numbers provided to work out which one is bigger.
  
  I hope this helps.
  Comment on Marc's post “To look at the drawings i...”
  (4 votes)
TristanL
Posted a month ago. Direct link to TristanL's post “deez nutz”
deez nutz
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sevastianlunamelende
Posted 3 months ago. Direct link to sevastianlunamelende's post “why is everyone commets f...”
why is everyone commets from like 9 years ago like for reall who cares any way abt yall commets
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warrenev
Posted 8 years ago. Direct link to warrenev's post “is the area the length ti...”
is the area the length times width
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- Eric Lee
  Posted 8 years ago. Direct link to Eric Lee's post “Yes. But only rectangles ...”
  Yes. But only rectangles and squares. LxW is the formula for the squares and rectangles; others, like circles and trapezoids, have different formulas.
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GraceD
Posted a month ago. Direct link to GraceD's post “would you answer this 30x...”
would you answer this 30x1,000=
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- Jie Ma
  Posted 8 days ago. Direct link to Jie Ma's post “Eets 30000”
  Eets 30000
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Mohannad Mohammad Nabil ElNesr
Posted 5 years ago. Direct link to Mohannad Mohammad Nabil ElNesr's post “That reference to pi and ...”
That reference to pi and the Fibonacci sequence though
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sajankotha95
Posted 8 years ago. Direct link to sajankotha95's post “How can I find the area o...”
How can I find the area of my land with sides 155,185,125,185 sq fleets
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Video transcript

Diya is looking to buy a plot of land to build her home on. She finally narrows her search to two plots that both have good locations. The plot at 314159 Apple Lane has a width of 30 meters and a length of 40 meters. The plot at 11235 Fibonacci Drive has a width of 50 meters and a length of 20 meters. They are each being sold for $36,000. Which one is a better deal? So they're the same price, and they're in comparable neighborhoods. So really, the better deal is the one that actually gets me more area. So I encourage you to pause the video and think about, which one of these am I getting more land for the same amount of money? Well, to think about how much land I'm getting, I'm really thinking about, how much space is that plot taking up? Or I'm really thinking about, what is the area of each of these plots? And we've already figured out that you can calculate the area of a rectangle by multiplying its length times its width. So the area of Apple Lane is 40 meters times 30 meters, which is equal to-- 40 times 3 is 120. 40 times 30 is 1,200. And then it's meters times meters. Or you can view this as square meters, 1,200 square meters. Now let's think about what the area of the plot at Fibonacci Drive is. So its length is 20. Its width is 50. So here the area is 20 meters times 50 meters, which is equal to-- 20 times 5 is 100. 20 times 50 is 1,000 square meters. So it's pretty clear when you calculate the area that Apple Lane, you're getting more square meters than you would get at Fibonacci Drive. And literally, when we say 1,200 square meters, that means if you were to put a 1 meter by 1 meter square here-- so a really small one like that-- then you could fit 1,200 of these on this plot of land, while you could only fit 1,000 of them on this plot of land-- of these 1 meter by 1 meter squares. So we have a larger area, same neighborhood or comparable neighborhood for the same price. I would go with Apple Lane being the better deal.