Question:The volume of a cube is `2744 cu. cm.` Its surface area is : 

A `196 cm^2` 
B `1176 cm^2` 
C `784 cm^2` 
D `588 cm^2` 

+ Answer
B 

+ Explanation
`a^3 = 2744`

`= (2 xx 2 xx 2 xx 7 xx 7 xx 7) ⇒ a`

`= 14 cm.`

:. Surface Area 

`= 6a^2 = (6 xx 14 xx 14) cm^2`

`= 1176 cm^2`.

+ Report

Irin Moni

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