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Surface area = 2*(L*B + B*H + H*L) = 2*(4*5 + 5*8 + 8*4)

= 2*(20 + 40 + 32) = 2*92 = 184 m2

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Q: What is the surface area of a rectangular prim with base 4 m by 5 m and height 8 m?
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