Question

ln edge of cube is increased by 10%,by what percent its lateral surface area would increase

Answer 1

Solution

Let the edge of the square = 100

Increased by 10%

therefore, New edge will be 110

lateral Surface Area of a square = 6 * (100)^2

                              = 60000

lateral  Surface area of square with new edge = 6*(110)^2

= 72600

increase% ( 72000-60000/60000)*100

answer 21%

Hope this helps