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

Answer:

Percentage increase in volume will be 33.1 %

Step-by-step explanation:

Let the each edge of cube be

100 units.

Then its volume is

100 3 = 1000000 cubic units.

If each edge increases by 10 %

it becomes 110 units

and volume becomes

110 3 = 1331000 cubic units  

Therefore increase in volume is

1331000 − 1000000

= 331000 cubic units

and percentage increase in volume is

331000 1000000 × 100 %

= 331 10 %

= 33.1%

Hope it helps!!!

Answer 2

Answer:

33.1

Step-by-step explanation:

Let the each edge of cube be

100 units.

Then its volume is

100* 3 = 1000000 cubic units.

If each edge increases by 10 %

it becomes 110 units

and volume becomes

110* 3 = 1331000 cubic units  

Therefore increase in volume is

1331000 − 1000000

= 331000 cubic units

and percentage increase in volume is

331000 /1000000 × 100 %

= 331 /10 %

= 33.1%