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surface area of a room watch

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    (Original post by elekro)
    so the walls alone(without ceiling and floor, as the problem states that Stephanie wants to paint just the walls) are 80m^2 (because two walls are 9.2x2.5 and the others are 6.8x2.5). So for one coat of paint you need 4 tins, thus for two coats you need 8 tins, which will cost you 94 pounds.
    Thank you. I've just realised that i've had the sizing wrong which was way i've kept getting wrong answers...
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Updated: January 11, 2017

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