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If three cubic biscuits edges 0.3 m, 0.4...

If three cubic biscuits edges 0.3 m, 0.4 m and 0.5 m respectively are melted and formed into a single cubic biscuit, then what is the total surface area of the cubic biscuit?

A

A)1.08 `"m"^(2)`

B

B)1.56 `"m"^(2)`

C

C)1.84 `"m"^(2)`

D

D)2.16 `"m"^(2)`

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