Glass Footed

Cutting glass - feet x thickness?

Ok, this just won't end. Again I am the nurse trying to survive algebra.

A part of our word problem for our project.

If we are cutting a panel of glass that is 53 inches x 43 inches. We cut it into 8 panels - if you can visualize one long horizontal cut and three vertical cuts. Our instructions say it takes 0.2 kWh of energy per foot. So we calculated that we cut 53 inches across and 43 inches down (x 3). Then we multiplied that by 0.2 kWh . We will then multiply that by whatever cost we assign a kWH.
PROBLEM - the teacher posts we have to take into account the thickness. What the heck is the equation for that????? Can anyone help? Thanks so much!
OH my gosh. I apologize. So sorry to leave out the thickness. 0.2 mm
We did get that it took 3.03 kWh but how do we factor in the thickness.
A million thanks!

you are still missing something. I would think that your 0.2kWh of energy takes into account the fact that the glass is .2mm thick. Evidently not, so you need to define how much thickness it does cut. {Say .1mm; then you double your answer because you have doubled your cuts.}

But according to calculus, that laser beam cutter could slice down only 1 / infinity [but lets say 1/1,000,000 mm each time to have a real number; i e 2 million passes to cut all the way through.] Doing the math, you probably could not afford the electricity to cut your glass - lol.

In short, you need to know how deep into the glass thickness of .2mm each pass cuts, so you can use that as a multiplier of the surface lines you computed [53 in + 43 + 43 + 43 = 182].

===your multiplier would be { .2/thickness of laser cut } then do * the 182 surface inches
if you have no specific depth answer, use ^^^^ as shown in the { }

thickness: .2, 1 multiplier; .1, 2; .05, 4 ... etc

P S How did you know which way to cut? you could do 3*53 + 1*43.... just saying.

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