A cuboid has total surface area of 40m^2 and its lateral surface area is 26m^2 .Find the area of its base .

Answers (1)

Solution :  We have , 

                Total surface area = 2 (surface area of base ) + (surface area of four walls )

Rightarrow            40 = 2[(surface area of base ) + (Lateral surface area )]

Rightarrow            40 = 2[(surface area of base ) + 26 ]

Rightarrow             40= 2(surface area of base )+52

Rightarrow               Surface area of base = frac122=6m^2

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