A cuboid of sides 5 cm, 10 cm and 20 cm are melted to form a

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A cuboid of sides 5 cm, 10 cm and 20 cm are melted to form a new cube. What is the ratio between the total surface area of the cuboid and that of the
cube?

[SSC CPO 3 July 2017 Afternoon Shift With Answers]

A 6 : 5

B 7 : 6,

C 11 : 10,

D 9 : 7,