find the total surface Area of a room whose dimensions are 18cm x 4cm x 8cm
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Step-by-step explanation:
Given that l=18cm, b=8cm, h=4cm
∴T.S.A=2(lb+bh+lh)
=2[(18×8)+(8×4)+(18×4)]
=2(144+32+72)
=2×248
=496
∴T.S.A=496cm²
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