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3 years ago

7

You are to construct an open rectangular box with a square base and a volume of 48 ft^3. If material for the bottom costs $6/ft^

2 and the material for the sides costs $4/ft^2 what dimensions will result in the least expensive box. What are its dimensions?

1 answer:

Paha777 [63]3 years ago

7 0

I think it is 5/12 I don’t know that

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Nitella [24]

We know that
<span>Of all the rectangles having same area, square has the least perimeter
</span>
area of square=x²
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72=x²
x=√72-----> x=6√2 cm

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the answer is
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