The diagonal of a cube is cm. Find its surface area	Answers:
A) 216 sq.cm
B) 316 sq.cm
C) 416 sq.cm
D) 516 sq.cm
E) None of these
Explanation:   Let the edge of the cube be a.   so, the diagonal √3 a = 6√3   =&gt; a=6   Surface area = 6a2 = 6 x 6 x 6 = 216 cm2   216 sq.cmnswer: 216 sq.cm
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The diagonal of a cube is cm. Find its surface area