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Mathematics 9 Online
OpenStudy (anonymous):

the surface are of a triangular prism with dimensions of height-5 cm length 21 cm width-6 cm

OpenStudy (anonymous):

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OpenStudy (anonymous):

lol

OpenStudy (anonymous):

so break it into parts, we have two triangles and 3 rectangles, ya?

OpenStudy (anonymous):

the bottom one is easy, 21*6 the two slanted rectangles are hard so are the two trianles on the ends. so we'll start with the triangles on the end.

OpenStudy (anonymous):

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