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Secondary education

Y8 maths-how do you find the perimeter of a shape when you only know the area?

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ComfyPillow · 07/11/2017 20:13

DS2 Y8 maths-2 shapes, one a T and the other a Z shape. He’s given the area and asked to find the perimeter. He’s stuck and I can’t remember. 😳😳 Help!

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noblegiraffe · 07/11/2017 20:32

Can you post a picture of the question because that sounds a bit weird without further info?

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ComfyPillow · 07/11/2017 20:40

Thanks NobleGiraffe, I’ve just heard back from DH after sending it to him (he’s away) and he’s explained that as they are made up of individual squares, I needed to work out the area of each square by dividing total area by amount of squares and from that I then know length of side of each square by square rooting. Then add up sides around the irregular shapes.
Hope that makes sense. Thanks for offering help but I think we’re sorted. Y8 is about my cusp. I don’t even pretend to be able to help Y10 DS1. Blush I’m sure if far more complicated that I needed for GCSE.

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ComfyPillow · 07/11/2017 20:42

But thanks! Grin

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