Question

9.If each side of a cube is increased by 10%. What is the percentage increase in

surface area of the
cube
​

Answer 1

Let, the edge of the square = 100

Increased by 10%

therefore, New edge will be 110

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

= 60000

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

= 72600

% increased in surface area = [(72600 - 60000)/60000] * 100

=21%

Answer : 21%

Answer 2

Answer:

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