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

(4 Posts)
ComfyPillow Tue 07-Nov-17 20:13:31

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!

noblegiraffe Tue 07-Nov-17 20:32:31

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

ComfyPillow Tue 07-Nov-17 20:40:56

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.

ComfyPillow Tue 07-Nov-17 20:42:17

But thanks! grin

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