prameela painted the outer surface of a cabinet of measres 1m*2m*1.5m. find the surface area she cover if she painted all except the bottom of the cabinet?
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In the cuboidal cabinet ;
l = 1 m
b = 2m
h = 1.5 m
Area of whole cabinet except bottom
= T.S.A - bottom area
= 2(lb+bh+hl) - lb
= 2(1×2 + 2×1.5 + 1.5×1) - (1×2)
= 2(2+3+1.5) - 2
= 13+2
= 15 m sq.
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l = 1 m
b = 2m
h = 1.5 m
Area of whole cabinet except bottom
= T.S.A - bottom area
= 2(lb+bh+hl) - lb
= 2(1×2 + 2×1.5 + 1.5×1) - (1×2)
= 2(2+3+1.5) - 2
= 13+2
= 15 m sq.
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