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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 bottom of the cabinet?

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The area of outer surface of a cabinet except the bottom of the cabinet will be equal to its lateral surface area.

I = lm, b = 2m, h = 1.5m. 

A = 2h(l + b) 

= 2 × 1.5(1 + 2) 

= 3 × 3 = 9 m2.

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