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# If the perimeter of a square is 80p + 19 cm , What is the length in cm , of each side of the square ? Explain?

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Mathisbae  Apr 13, 2015

#3
+94193
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Sorry Mathsisbae,

you misunderstood my request.   (Private message)

I wanted you to make a post here to ask me to explain more .

I did not want you to make another post that was the same - we don't do that.  :)

okay you want me to expain some more. :)

The perimeter of the square is  80p+19 and that is in cms

There are 4 sides and they are all the same.  when you add up all the sides you will have the perimeter.

So on side must be a quarter of the perimeter.

$$\\side=\frac{1}{4}\times (80p+19)\\\\ side=\frac{80p+19}{4}\;\;cm$$

---------------------------------------------------------

If you are still not sure think about what you would do with something simpler

Say the perimeter is    20cm

then the side would have to be  20/4 = 5cm   BECAUSE  5+5+5+5=20cm

------------------------------------------------

This method of replacing something complicated with something easy to work out how to do it is really handy.

I still do this regularly.  :)

Does that help ?

Melody  Apr 13, 2015
#1
+94193
+5

(80p+19) /4   cm

Melody  Apr 13, 2015
#2
+94193
0

I see that you are on the forum Mathisbae,  Have a think about it and if you don't understand I can explain some more :)

Melody  Apr 13, 2015
#3
+94193
+5

Sorry Mathsisbae,

you misunderstood my request.   (Private message)

I wanted you to make a post here to ask me to explain more .

I did not want you to make another post that was the same - we don't do that.  :)

okay you want me to expain some more. :)

The perimeter of the square is  80p+19 and that is in cms

There are 4 sides and they are all the same.  when you add up all the sides you will have the perimeter.

So on side must be a quarter of the perimeter.

$$\\side=\frac{1}{4}\times (80p+19)\\\\ side=\frac{80p+19}{4}\;\;cm$$

---------------------------------------------------------

If you are still not sure think about what you would do with something simpler

Say the perimeter is    20cm

then the side would have to be  20/4 = 5cm   BECAUSE  5+5+5+5=20cm

------------------------------------------------

This method of replacing something complicated with something easy to work out how to do it is really handy.

I still do this regularly.  :)

Does that help ?

Melody  Apr 13, 2015