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Mathematics 7 Online
OpenStudy (anonymous):

Given the following paper sizes and building sizes, determine the scale required to plot the building on the required paper size. (Show your work!) 1) 20'X60' building on 11"X17" paper 2) 250'X300' building on 8.5"X11" paper 3) 120'X50' building on 11"X17" paper 4) 20'X60' building on 24"X36" paper

OpenStudy (allank):

Hint: For each of the numbers, start by comparing the lengths and widths of building and paper to determine which side (length or width) will determine the scale to use.

OpenStudy (anonymous):

for number 1 is it 1"=60' ?

OpenStudy (anonymous):

or 1"=50'?

OpenStudy (allank):

Lemme work it out: 20'X60' building on 11"X17" paper So, draw a quick sketch of the relative sizes: |dw:1347248797427:dw| Note that the 20*60 looks more like a rectangle, while the 11*17 looks more like a square, so we will consider the lengths only while looking for the scale. 17" rep 60' 1" rep 60/17'=3.5294'

OpenStudy (allank):

Note that we considered the lengths because, whichever scale we determine using that, the width will automatically fit onto the piece of paper. I hope that helps. :)

OpenStudy (anonymous):

so the scale would be 1"=3.5294'

OpenStudy (allank):

True. Try not to use the =, it is better to say 'rep'

OpenStudy (allank):

Using = is like saying 1=2 which is mathematically untrue.

OpenStudy (anonymous):

ok thanks

OpenStudy (allank):

you're welcome.

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