if Length, breadth and height of a cuboid is tripled
a). how many times will its surface area increase?
b). how many times will its volume increase?
Answers
Answer:
Substitute values
Take cube's one side area
YxY so y=1
1x1=1so 1x6=6(total surface area)
Then take 2Y
2x2=4
4x6=24
So now to get the answer we need to divide 2nd one from 1st one
24/6=4
Step-by-step explanation:
Volume of a cube = edge * edge* edge = a^3 ( where ‘a’ refers to side)
If ‘a’ is tripled .. then a becomes 3a..
Volume = (3 a)^3= 27 a^3 or 27 units
So, we can tell that the volume is 27 times the original volume..
Change = new volume (attained after tripling the edges ) - actual volume
= 27 a^3 units - 1 a^3 unit
= 26 a^3 units
Therefore the change is the new volume is 26 a^3 units larger than the actual one..
Hope this helps you ..
Thank you for the request ..Sneha Singh
Answer:
Step-by-step explanation:
Take cube's one side area
YxY so y=1
1x1=1so 1x6=6(total surface area)
Then take 2Y
2x2=4
4x6=24
So now to get the answer we need to divide 2nd one from 1st one
24/6=4
Step-by-step explanation:
Volume of a cube = edge * edge* edge = a^3 ( where ‘a’ refers to side)
If ‘a’ is tripled .. then a becomes 3a..
Volume = (3 a)^3= 27 a^3 or 27 units
So, we can tell that the volume is 27 times the original volume..
Change = new volume (attained after tripling the edges ) - actual volume
= 27 a^3 units - 1 a^3 unit
= 26 a^3 unit
e