anonymous
  • anonymous
The solid is similar to a larger solid with the given scale factor. find the surface area and the volume of the larger solid
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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katieb
  • katieb
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anonymous
  • anonymous
anonymous
  • anonymous
hm, well i answered your other question straight up, so if you can figure out how i got that, then you might be able to do this...
anonymous
  • anonymous
so you just have to multiply the volume by the scale left hand side and right hand side

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anonymous
  • anonymous
sorry divide by left side, multiply by right side... thats how scales work
anonymous
  • anonymous
so for the rectangle, the new scale factor would be 9:27...
anonymous
  • anonymous
well you only need the volume right? so take the volume of the rectangle prism (495) then divide by 1 and multiply by 3 because its 1:3
anonymous
  • anonymous
i need the surface area and volume
anonymous
  • anonymous
is that whats on the side? S and V?
anonymous
  • anonymous
yea
anonymous
  • anonymous
ok so you only need to use those and the scale to work it out... so say i have a S=6 and scale 2:6 my S=(6/2)*6=18 can you relate that to the question you have??
anonymous
  • anonymous
so i would do (3/1)*398
anonymous
  • anonymous
no, you would do (398/1)*3
anonymous
  • anonymous
i chose bad numbers, which were easy to mix up sorry
anonymous
  • anonymous
so the surface area would =1194in^2
anonymous
  • anonymous
yes
anonymous
  • anonymous
would it be the same for volume?
anonymous
  • anonymous
yeah, you do it the same way. cause they already gave you the volume, just in the wrong scale... so its (495/1)*3 which i know you can do... so what is the answers for teh rectangle?
anonymous
  • anonymous
1485in^3
anonymous
  • anonymous
yeah, but what about the other picture... can you tell me the answers for that? you just do it the same way.
anonymous
  • anonymous
(144*pi/3)*2=301.44cm^2
anonymous
  • anonymous
thats not the same way.
anonymous
  • anonymous
oh wait, is that blurry thing pi? if so then yeah thats right
anonymous
  • anonymous
it says 144 pi cm^2 for the surface doesn't it?
anonymous
  • anonymous
yea it is
anonymous
  • anonymous
ok cool, you got it congrats :)
anonymous
  • anonymous
(288*pi/3)*2=602.88cm^3
anonymous
  • anonymous
oh no its ((144*pi)/2)*3 sorry... so close, but it was just a small error
anonymous
  • anonymous
Surface are= 678.24cm^2
anonymous
  • anonymous
yep, final answer :)
anonymous
  • anonymous
volume=1356.48cm^3
anonymous
  • anonymous
yes. what are you in like grade 8? doing better than i was then...
anonymous
  • anonymous
no
anonymous
  • anonymous
lower grade?
anonymous
  • anonymous
im actually a senior
anonymous
  • anonymous
i'd count grade 8 as senior :( scales took me ages was my point anwyay
anonymous
  • anonymous
oh okay
anonymous
  • anonymous
and you got the powers right which was pretty cool :P
anonymous
  • anonymous
thank you for ur help
anonymous
  • anonymous
no problem

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