Question

Each side of a cube is increased by 50 percent . Find the percent increase in surface area of cube

Answer 1

surface area before = 6 (a^2)

now side = a + a/2 = 3a/2

surface area is = 6 * 9a^2/4

= 27a^2/2

difference (increase) = 15a^2/2

percentage = 125%