Question

If each of the edge of a cube is increased by 40%. Then what is the percent by which it’s surface area will increase?

Answer 1

Answer: 96%

Step-by-step explanation:

original edge of cube = a

surface area = 6a^2

new edge = 7a/5

new surface area = 11.76 a^2

increase = 5.76 a^2

percentage = 96%

{please refer to the image}