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8 December, 05:19

Surface area of a trangular prism with height of 15 a side with 9 and side with 12

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  1. 8 December, 05:25
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    A tip for doing these question, you should draw the shape out and label the sides, then calculate each side.

    TSA (Total Surface Area) = 2 (1/2*9*12) + 2 (15*12) + 9*15

    = 108 + 360 + 135

    =603

    Remember to add your units!
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