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January 31, 2015

January 31, 2015

Posted by **JOY** on Thursday, May 12, 2011 at 9:20am.

- geometry -
**Henry**, Friday, May 13, 2011 at 6:47pmI'm assuming this is a right prism meaning all edges are perpendicular and

form rt angles.

Al = Ph = (2W + 2L)h,

Al = (2*5 + 2*7)12 = 288cm^2. = Lateral

area.

As = 2(w*h) + 2(l*h) + (2(w*l),

As=2(5*12) + 2(7*12) + 2(5*7) = 358cm^2

= Surface area.

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