Posted by malachi on Wednesday, February 16, 2011 at 5:42pm.
Name the lenghts of the sides of three rectangles with a perimeter of 12 units use whole numbers only. I don't understand the question

math  Qpee, Wednesday, February 16, 2011 at 5:52pm
The questions is telling you that there are three possible rectangles whose perimeter is 12 units and whose sides are whole numbers in length.
The perimeter of a rectangle is given by 2(L+B).
So, this means that L+B = 6.
What whole numbers add up to 6?
1+5 = 6
2+4 = 6
3+3 = 6
And those are your rectangles. One has sides of 1 and 5 units, the second has 4 and 2 unit sides and the third is a square with a 3 unit side. 
math  Ms. Sue, Wednesday, February 16, 2011 at 5:53pm
Each rectangle has a perimeter of 12 units.
P = 2L + 2W
12 = (2 * 4) + (2 * 2)
12 = (2 * 3) + (2 * 3)
Can you think of the possible dimensions of a third rectangle? 
math  melissa, Tuesday, May 31, 2011 at 6:38pm
using only whole numbers, how to can i draw 3 rectangles with perimeter of 12 units

math  ladybug, Tuesday, February 7, 2012 at 9:08pm
name the lenghts of the sides of three rectangles that have perimeters of 14 units

math  Anonymous, Wednesday, March 7, 2012 at 9:44pm
how do you find the perimeter

math  valeria, Monday, March 12, 2012 at 9:34pm
72

math  maria, Tuesday, May 29, 2012 at 7:59pm
74

math  Avilene, Wednesday, February 5, 2014 at 7:06pm
How can you do perimeter