reema painted the outside of a cabinet of measure 3m×4m×2.5m. how much surface area did she cover if she painted all except the bottom of the cabinet
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Answer:
l=3m
b=4m
h=2.5m
surface area of cabinet = area of four sides + area of top
= 2(l+b)h + l×b
= 2(3+4)2.5 + (3×4)
= 35 + 12
= 47m²
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