anonymous
  • anonymous
How many 20cm by 30cm rectangular tiles would you need to tile the outdoor area shown below? I will attach the photo of the shape given. I have worked out the shape to be 10.95m squared, but I don't understand how to figure out how many tiles will fit in that space! Please help!
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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schrodinger
  • schrodinger
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anonymous
  • anonymous
iGreen
  • iGreen
|dw:1449498425218:dw|
iGreen
  • iGreen
Find the area of the object, and divide by the area of a 20x30 rectangle.

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More answers

iGreen
  • iGreen
|dw:1449498512196:dw| We can cut it into 3 rectangles as shown
iGreen
  • iGreen
480 - 170 = 310 310 / 2 = 155 260 - 90 = 170
anonymous
  • anonymous
I worked it out by keeping it in decimal form and got 2.6 x 4.8 - (0.9 x 1.7)= 10.95 can you explain why it did work?
iGreen
  • iGreen
|dw:1449498667047:dw|
iGreen
  • iGreen
There are the measurements for the three rectangles, can you find the areas of all of them and add them together?
iGreen
  • iGreen
Hold on, let me check your work.
iGreen
  • iGreen
10.95 is correct.
iGreen
  • iGreen
Now find the area of a 20cm by 30cm rectangle. Or 0.2m by 0.3m
anonymous
  • anonymous
Yes I see from you using 260 instead of 2.6 and so on that its actually 109500 but can you explain why it didnt work by keeping the decimals?
iGreen
  • iGreen
The rectangle is 20 CENTIMETERS by 30 CENTIMETERS However, the figure is measured in meters, so I'm assuming you didn't convert?
anonymous
  • anonymous
And yes I get the right answer of 183 by doing that
anonymous
  • anonymous
I thought multiplying the answer by 100 was enough to convert it
iGreen
  • iGreen
182.5 to be exact
anonymous
  • anonymous
but I guess that brings it short a few zeros...I think I see now. Thank you very much for your help! :D
iGreen
  • iGreen
You don't just multiply by random numbers, you have to convert them correctly. 1m = 100cm 1cm = 0.01m
iGreen
  • iGreen
No problem, you did the work yourself! :)
anonymous
  • anonymous
Goodbye!

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