A cube of edge 4 cm as shown below is cut into two equal halves by cutting it diagonally along the edge AB towards the edge CD. Approximately by what percentage does its total surface area increase?

1) 50%
2) 47.13%
3) 60%
4) 10%

• surface area = 6 * 4^2 = 96
  increase in surface area after cutting= 2*4*4^1/2 = 32*2^1/2
  percentage increase= 32 *2^1/2 /96 = .4713 *100 = 47.13%
• 10 years agoHelpfull: Yes(1) No(0)