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Rukhsar painted the outside of the cabinet of measure 1 m * 2 m * 1.5 m. How much surface area did she cover if she painted all except the bottom of the cabinet.

4.    Rukhsar painted the outside of the cabinet of measure 1 m \times 2 m \times 1.5 m. How much surface area did she cover if she painted all except the bottom of the cabinet.

        

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Required area = Total area - Area of bottom surface

Total area    = 2(1\times2+ 2\times1.5 + 1.5\times1 ) = 13\ m^2

Area of bottom surface  = 1\times2 = 2\ m^2

So required area = 13-2\ m^2 = 11\ m^2

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