Homework Help: 2 questions. for math.

Posted by Taylor on Monday, January 7, 2008 at 8:04pm.

I have a question.
can you help me.

The question is, Find the side length of a square that has a permeter of 32cm?

im not understanding the part where it says find the side length.
because to fing the area you need to do width x length.
so how do i get the perimeter?

2 questions. for math. - Writeacher, Monday, January 7, 2008 at 8:07pm
The perimeter is the measurement around the outside. So adding the 4 sides together equals 32 cm. How long do you think each side is?
2 questions. for math. - Taylor, Monday, January 7, 2008 at 8:11pm
thank you,would it be 8cm?
- 2 questions. for math. - Taylor, Monday, January 7, 2008 at 8:18pm
  i have another question about squares?
  the question is,
  a square has an area of 81 square feet. what is the length of each side?
  
  i don't really know because it doesn't show the width so i can't do w.l
  ?? what do i do?
  - 2 questions. for math. - Writeacher, Monday, January 7, 2008 at 8:20pm
    area = length x width
    
    Since a square has equal length and width, obviously all 4 sides are equal.
    
    So ... what x what = 81 ??
  - 2 questions. for math. - Taylor, Monday, January 7, 2008 at 8:25pm
    i don't know.
    
    my answer would be
    
    81 / 4 = 20.25
    ??
    
    it doesn't make since though??
  - 2 questions. for math. - Writeacher, Monday, January 7, 2008 at 8:29pm
    No that doesn't make sense.
    
    Area = length x width
    No division involved; no addition involved; no subtraction involved. Only multiplication.
    
    ___ x ___ = 81
    Think back on your multiplication tables.
2 questions. for math. - Writeacher, Monday, January 7, 2008 at 8:12pm
right
2 questions. for math. - Taylor, Monday, January 7, 2008 at 8:35pm
9 x 9 = 81
silly
=]]
2 questions. for math. - Writeacher, Monday, January 7, 2008 at 9:11pm
yes!!! 9 x 9

So each side is 9 ft.

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