If each edge of a cube is increased by 50% then its surface area is increased by:
A. 50%
B. 125%
C. 150%
D. None of these

• let edge = a
  so surface area of a cube= 6a^2
  when the edge of the cube is increased by 50% then edge = a+a/2 =3a/2
  then the new surface area= 6(3a/2)^2 = 13.5a^2
  so the surface area is increased by = ((13.5a^2-6a^2)/6a^2)*100 = 125%
• 10 years agoHelpfull: Yes(3) No(2)
• Answer==> c. 150%
• 10 years agoHelpfull: Yes(1) No(0)