prameela painted the outer surface of a cabinet of measures 1m *2m*1.5m. find the surface area she cover if she painted all except the top and bottom of the cabinet
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answer: thw required area is 9m^3
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Answer:
Step-by-step explanation:
Length = 1 m
Breadth =2 m
Height = 1.5 m
Surface area of a cuboid = 2(L b + LH + BH)
= 2(1×2 + 2×1.5 + 1.5×1 )
= 2 ( 2 + 3 + 1.5 )
= 2 ( 6.5 )
= 13
Required area = total area - shaded part
=13 - 2 (l ×b)
=13 - 2 (1 ×2)
=13 - 4
=9 metre square
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