Area HELP (Speechless)

800cm(cubed) of milk is to be stored in a container.

what area of metal is required to make a carton 16 cm high of square cross-section so that it will hold the milk?

Printable View

- Jan 20th 2008, 02:34 PMnodzak1992Area HELP
Area HELP (Speechless)

800cm(cubed) of milk is to be stored in a container.

what area of metal is required to make a carton 16 cm high of square cross-section so that it will hold the milk? - Jan 20th 2008, 03:13 PMa tutor
- Jan 20th 2008, 03:17 PMnodzak1992
is the base 800/6 = 133.3

- Jan 20th 2008, 03:20 PMa tutor
- Jan 20th 2008, 03:21 PMnodzak1992
x squared?

- Jan 20th 2008, 03:22 PMa tutor
- Jan 20th 2008, 03:24 PMnodzak1992
whats the equation for the volume (Angel)

- Jan 20th 2008, 03:26 PMa tutor
Volume of a cuboid = length x width x height

- Jan 20th 2008, 03:27 PMnodzak1992
(x) x 800 x 16?

- Jan 20th 2008, 03:29 PMa tutor
No. Just write an expression for the volume in terms of x.

Leave the 800 out for now. - Jan 20th 2008, 03:31 PMnodzak1992
(x) x 16 x (x) squared?

- Jan 20th 2008, 03:38 PMa tutor
Do you mean 16x^2 ?

That's correct.

So since this is the volume 16x^2=800.

Can you solve that to find the value of x? - Jan 20th 2008, 03:41 PMnodzak1992
squared root of 784 = 28 ?

- Jan 20th 2008, 03:46 PMa tutor
No, don't subtract 16.

Divide both sides of the equation by 16

16x^2=800

x^2=800/16

x^2=50

Now square root both sides.

What are things like in your maths class? Chaotic? - Jan 20th 2008, 03:49 PMnodzak1992
x = 7.07 , now what?

yeah very !