Monday

September 1, 2014

September 1, 2014

Posted by **maricela** on Wednesday, May 9, 2007 at 10:40pm.

There is not enough data given to set up the problem.

Wasn't the volume of the box given?

volume is 144cubic feet

volume is 144 cubic feet

ahh, now we got something to work with, hope it is not too late

let each side of the base be x, let the height be y

given: (x^2)y = 144 ----> y=144/x^2

Cost = 4(x^2) + 3(4xy)

=4x^2 + 12x(144/x^2)

= 4x^2 + 1728/x

Differentiate the Cost equation, set that result equal to zero and solve for x

(I got x=6)

thanx. i got 432 for the price and 4 for y

**Answer this Question**

**Related Questions**

CALC - An open box is to be constructed so that the length of the base is 4 ...

Calculus - A rectangular box is to have a square base and a volume of 20 ft3. If...

Calculus - An open top box with a square base is to be made so that it holds 3 ...

calculus - An open box is to be constructed so that the length of the base is 4 ...

Calculus - A rectangular box with a square base and top is to be made to contain...

math - A rectangular box with a square base and top is to be made to contain ...

Calculus - A rectangular box with square base (which is NOT necessarily a cube) ...

Pre Cal - find the surface area of a box of hieght h whose base dimensions are p...

calculus - a rectangular box is to have a square base and a volume of 20 ft ...

Calculus - A box is constructed out of two different types of metal. The metal ...