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Mathematics 19 Online
OpenStudy (anonymous):

Check my answer please?

OpenStudy (anonymous):

OpenStudy (anonymous):

no u got it wrong its 426m^2

OpenStudy (anonymous):

as the formula is 2ab + 2bc + 2ac

OpenStudy (whpalmer4):

2 sides of 5x12 2 sides of 5x9 2 sides of 12x9 2*60 + 2*45 + 2*108 = 120 + 90 + 216 = 426

OpenStudy (anonymous):

Thank you guys :D

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