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VCE Stuff => VCE Mathematics => VCE Mathematics/Science/Technology => VCE Subjects + Help => VCE General & Further Mathematics => Topic started by: pinklemonade on February 23, 2019, 02:06:18 am

Title: BASIC Q HELP!!
Post by: pinklemonade on February 23, 2019, 02:06:18 am

Hey guys, just need quick help of how to find the perimeter of this shape!
It looks really simple but I just haven't touched on maths in a while so I have no idea how to work it out


Any help would be much appreciated with working out!!

Title: Re: BASIC Q HELP!!
Post by: AlphaZero on February 23, 2019, 02:24:43 am

Quote from: pinklemonade on February 23, 2019, 02:06:18 am

Hey guys, just need quick help of how to find the perimeter of this shape!
It looks really simple but I just haven't touched on maths in a while so I have no idea how to work it out


Any help would be much appreciated with working out!!

I've colour-coded the edges:

(https://i.imgur.com/oq6izVf.png)

> Note that the 3 red lengths on the right have the same total length as the red length on the left (17 mm each).

> The two blue lengths are the same (14 mm each).

> The two green lengths are also the same (2 mm each).

Therefore,  \(\text{perimeter}=2\!\times\!17\;+\;2\!\times\!14\;+\;2\!\times\!2=34+28+4=66\ \text{mm}.\)