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Math Help - Perimeter of a square= Equation

  1. #1
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    Perimeter of a square= Equation

    The perimeter of a square is 42 Feet and the sides of the square are each S ft. ; Set up the equation expressing this.

    two sides are S's on my assignment. other two are blank
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  2. #2
    Junior Member RHandford's Avatar
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    Sorry
    Last edited by RHandford; October 12th 2010 at 11:03 AM.
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  3. #3
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    Quote Originally Posted by RHandford View Post
    Sorry
    ?

    Still looking for help
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  4. #4
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    Do you understand what "square" means in reference to a geometric figure?
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  5. #5
    MHF Contributor harish21's Avatar
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    first, all the sides(S) of a square are equal.

    and

    the sum of all 4 sides is the perimeter.
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  6. #6
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    Yes I do. so it would be like 4S=42S :s
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  7. #7
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    Squares:
    Perimeter = 4S

    Rectangles:

    Perimeter = 2W + 2L
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  8. #8
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    eh.. im still confused
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  9. #9
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  10. #10
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    Quote Originally Posted by franzpulk View Post
    They want a Equation tho :S
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  11. #11
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    I just gave you all the necessary information. All it requires is plugging in the number given for the perimeter and the variable for the length of a side.
    If this were a difficult problem I'd probably give you the answer, but I've given you everything you need.
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  12. #12
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    Think of it this way:

    - You have four sides, each part of the total perimeter
    - You know that two of the sides are some number 's'
    - By nature of being a square, all sides must be this number 's'
    - So you have four sides of size 's', i.e. 4s (as you stated)

    Now, think about what an equation is. It equates something on the left-hand side (LHS) to the right-hand side (RHS). You want to find 's', right? Well you know that the total perimeter is 4s, and you know the value of the total perimeter as 42. So what does the equation look like?
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  13. #13
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    Quote Originally Posted by glitch View Post
    think of it this way:

    - you have four sides, each part of the total perimeter
    - you know that two of the sides are some number 's'
    - by nature of being a square, all sides must be this number 's'
    - so you have four sides of size 's', i.e. 4s (as you stated)

    now, think about what an equation is. It equates something on the left-hand side (lhs) to the right-hand side (rhs). You want to find 's', right? Well you know that the total perimeter is 4s, and you know the value of the total perimeter as 42. So what does the equation look like?
    4s=42?
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  14. #14
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    Now, solve for s.
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  15. #15
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    Quote Originally Posted by franzpulk View Post
    Now, solve for s.
    Thought that was the answer O_o
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