Homework Help: math 8th grade

Posted by tito on Tuesday, October 14, 2008 at 8:16pm.

the volume of a box needs to be 500 cubic cm. if the bas has dim of 12.5 cm and 5 cm how high must the box be?

I got 8 cm. Is this right?
My work is 12.5/500=40
5/40=8
8 cm

math 8th grade - Damon, Tuesday, October 14, 2008 at 8:18pm
check
8 * 12.5 * 5 = 500
- math 8th grade - tito, Tuesday, October 14, 2008 at 8:21pm
  Thank you. I just needed to show my work.
- math 8th grade - hannah, Tuesday, October 14, 2008 at 9:05pm
  the width of a rectangle is 2cm.the perimeter of the recangle is 16cm. what is the length of the rectangle?
  - math 8th grade - Anonymous, Sunday, October 19, 2008 at 7:08pm
    16 -4cm = 12/2 = 6 is the length
  - math 5th grade - john, Tuesday, February 10, 2009 at 7:18pm
    how do you compute 4cm = ___m
math 8th grade - Damon, Tuesday, October 14, 2008 at 8:26pm
well you have it upside down
500/12.5 = 40
40/5 = 8

I would have said:
12.5 * 5 * x = 500
so
62.5 x = 500
x = 500/62.5
x = 8
- math 8th grade - tito, Tuesday, October 14, 2008 at 8:30pm
  Thank you for all your help
math 8th grade - chris, Tuesday, October 14, 2008 at 9:08pm
-8c+1=-3

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