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anonymous
 5 years ago
LIL BROS MATHS: I NEED HELP. Use algebra to determine the dimensions of a spare based popper box that will hold 250ml, yet has the smallest possible surface area. Use a graphics calculator and show all working out........anyone know how to do this properly? There are lots of answers.....and no google help...
anonymous
 5 years ago
LIL BROS MATHS: I NEED HELP. Use algebra to determine the dimensions of a spare based popper box that will hold 250ml, yet has the smallest possible surface area. Use a graphics calculator and show all working out........anyone know how to do this properly? There are lots of answers.....and no google help...

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anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0Can I assume that W = H = L

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0dude....no its a square based prism.

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0SA = 2 * b * sqrt(b^2+h^2/4) + b^2 V = 1/3 * b^2 * h 250 = 1/3 * b^2 * h b = 5 * sqrt(30) / sqrt(h) Substitute b into SA, calculate minimum of derivative in respect to h

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0ok this is what we had so far... S = 2x^2 + 250/x after substituting for x, s==94.5 and x=4.... didnt seem right... going to try your method now....assuming SA is surface area and b= ? sprt=?

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0sqrt is square root b is base length

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0ok cool.... so then to find the smallest surface area, we substitute into b? (im not fantastic at maths) we have to make a graph and a table etc...

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0you have b = 5 * sqrt(30) / sqrt(h) so you substitute each b in SA to that, find derivative, and then the minimum

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0ahhh ok........going to work on it right now

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0soo whats the answer.....whats the smallest surface area in your workin out
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