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anonymous
 one year ago
How would you get d= 7300 m^3 to m^2?
An electrolytic tinplating process gives a coating of 3.0 x10^5 inches thick. How many square metres can be coated with 1kg of tin, d=7300 kg/m^3...is the full question, please just help me get the m^3 to m^2
anonymous
 one year ago
How would you get d= 7300 m^3 to m^2? An electrolytic tinplating process gives a coating of 3.0 x10^5 inches thick. How many square metres can be coated with 1kg of tin, d=7300 kg/m^3...is the full question, please just help me get the m^3 to m^2

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anonymous
 one year ago
Best ResponseYou've already chosen the best response.0@paki @toxicsugar22 Can either of you help?

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0@sweetburger can you help?

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0@abb0t can you help?

aaronq
 one year ago
Best ResponseYou've already chosen the best response.2I meant 0.00003 inches for height, which is 7.62e7 m (conversion done by google cuz i'm not 'murican). This is a volume, not a surface, but it has a fixed height. \(V=l*w*h=l*w*(7.62*10^{7}~m)\) The volume of tin must be found with the mass and the density. \(\rho=\dfrac{m}{V}\rightarrow V=\dfrac{m}{\rho}=\dfrac{1~kg}{7300~kg/m^3}=0.0001369863013699~m~\approx0.000137~m^3\) \(V=l*w*(7.62*10^{7}~m)= 0.000137~m^3\) Well make this a square base, so: \(x^2*(7.62*10^{7}~m)= 0.000137~m^3\) Finally we solve for x and we get one of the sides of our coating.dw:1441147497222:dw

aaronq
 one year ago
Best ResponseYou've already chosen the best response.2Actually solving for \(x^2\) gives you the area of the coating, so yeah you can stop there

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0will solving for x^3 give us a m^2 answer?

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0@aaronq ok, so looking at this, firstly thank you, but why are we finding volume, instead of let's say area? Is it because the coating has a thickness?

aaronq
 one year ago
Best ResponseYou've already chosen the best response.2yes, the thickness indicates that the object has 3 dimensions and has a volume. Solving for \(\sf x^2\) gives you the area

aaronq
 one year ago
Best ResponseYou've already chosen the best response.2The thickness indicates how large the material can coat the area. A thinner coating will give a larger area and viceversa.

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0Awesome Thanks, @aaronq I got 13.41m^2 Is this correct?!?

aaronq
 one year ago
Best ResponseYou've already chosen the best response.2no problem! sorry, idk my calculator is elsewhere. just divide the volume by the height and that should be it

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0Ok... I did 1.37*10^4 (volume) / 7.62*10^7 (height) = 179.79m^4 Then finally took the square root of that and got 13.41m^2

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0But, i don't know if that is how the exponents on metres goes??? Sorry to keep asking things, just want to make sure i'm absolutely correct on units (my teacher is strict on units) @aaronq

aaronq
 one year ago
Best ResponseYou've already chosen the best response.2the will cancel out and give you \(m^2\), remember i told you to follow the formula and divide the volume by the height? \(\sf \dfrac{volume}{height}=\dfrac{m^3}{m}=m^2\)

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0ok but then do you just leave the x^2???

aaronq
 one year ago
Best ResponseYou've already chosen the best response.2So you have \(x^2*(7.62*10^{7}~m)= 0.000137~m^3\) then just isolate \(x^2\)

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0because if you take the square root of 179.79 m^2 it comes out 13.41 m

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0so it would just be 179.79 m^2

aaronq
 one year ago
Best ResponseYou've already chosen the best response.2they're asking you for square meters
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