Correct option is : (B) Four times
Let
Original Edge of Cube = a
Given that edge is doubled.
\(\therefore\) New edge = 2a
Surface area of original Cube = \(6 \times(\text {Edge})^2\)
Surface area of new cube \(=6 \times (\text {Edge})^2\)
\(=6 \times(2 a)^2 \)
\(=6 \times 4 a^2 \)
\(=4 \times 6 a^2\)
\(=4 \times\) original surface Area
\(\therefore\) New Surface area will be 4 times original surface Area.
