Question

3. If each side of the cube
is increased
by 10% find the
percentage increase in
surface
area of cube .​

Answer 1

Answer:

40%

Step-by-step explanation:

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Answer 2

AnSwEr -:

33.1% is the increase in the area

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Let the initial side of the cube be a.

According to question ,

If the side of the cube is increased by

10% or 10/100 x a + a

a/10 + a =

11a \ 10

Volume of cube = a x ax a

A= edge of a cube

volume = (11 x 11 x 11 / 1000 ) a^3

= (1331/1000)a^3

Percentage increase =

(1331/1000)a^3 - a^3/ a^3 x 100%

= 33.1%

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Formula to find area of cube and cuboid

Cuboid = l x b x h = l= length

B= breadth

H = height

Cube -: ax a x a , a= edge of a cube

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