An open box is to be constructed from a square piece of sheet metal by removing a square of side 4 feet from each corner and turning up the edges. If the box is to hold 576 cubic​ feet, what should be the dimensions of the sheet​ metal?

Respuesta :

Answer:

20'x20'

Step-by-step explanation:

Given that an open box is to be constructed from a square piece of sheet metal by removing a square of side 4 feet from each corner and turning up the edges

Let a be the side of the square

When 4 feet is cut from each corner, and made into a box the dimensions would be a-8, a-8 and 4.

Volume of box = lwh

[tex]= (a-8) (a-8) 4[/tex]

This is equal to 576

[tex](a-8) (a-8) 4=576\\2(a-8) =24\\a-8 =12\\a=20[/tex]

Dimensions of the sheet should be 20x20 feet