3. If each side of the cube
is increased
by 10% find the
percentage increase in
surface
area of cube .
Answers
Answered by
1
Answer:
40%
Step-by-step explanation:
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Answered by
1
AnSwEr -:
33.1% is the increase in the area
__________________________
____________________________
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%
_______________________________
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
_______________________________
33.1% is the increase in the area
__________________________
____________________________
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%
_______________________________
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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