Question:Two cube each with`6` cm edge are joined end to end. The surface area of the resulting cuboid is : 

A `864 cm^2` 
B `360 cm^2` 
C `576 cm^2` 
D `432 cm^2` 

+ Answer
B 

+ Explanation
New cuboid has length`= 12 cm,` breadth`= 6 cm` & height

`= 6 cm`

:. Its surface area`= 2(12 xx 6 xx 6 xx 6 + 12 xx 6) cm^2`

` = 360 cm^2.`

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Irin Moni

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