Melody

That sounds interesting anon, I did not know about this. 

I ran a few solids through in my head and it worked for them 

Thank you anon,

That is really nice of you,  I am really glad that we can help you. 

Why don't you join up properly.  It is really easy and you do not have to give any personal information.

You just have to choose a username and a password.

You get your own watchlist which is really helpful and you can access the message centre and best of all we will get to know you.  :))

A composite shape is just more than one shape put together.

A perimeter is just the distance around the outside.

There is no set formula.  It depends on what the shapes are. :)

@@ End of Day Wrap    Mon 23/2/15     Sydney, Australia   Time 1:35 am  (Really Tues morning)    ♪ ♫

Hi all,

Our wonderful answerers today were Silver27, Tetration, CPhill, Anima, geno3141, abhanda, Alan, Rosala, Eddierose and Heureka.   Thank you.   

Interest threads:

24/2/15

Thank you Heueka, you are a gem. 

Thanks Alan  

Using the search function.

Finding anonymous user posts can be very difficult.

They are really only findable if they have some unique words in them and then you can find them with the search function.

for example you could search for  'Magick of the Quadratic"  just by typing it (without the quotation marks) into the search box at the top of the page.  I like that post. 

If I wanted to search for Rosala's posts I would type in

by:rosala

If you become a member you get a private watchlist.  That is where I store posts that I am likely to want to find again. 

$$\frac{2}{5}\times b = \frac{2}{5}\times \frac{b}{1}=\frac{2b}{5}$$

I doubt that this calc doest that though I could be wrong.

Here is one that does.