if the dimension of cubes are doubled . by how many times will its zurface area increase
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Surface area of cube=6a
2
Is sides of cube is doubled
New surface area is =6×4a
2
Divide 2 by 1
=24a
2
surfaceareaofcube1
surfaceareaofcube2
=
6a
2
24a
2
=4times
Surface area increased four times
Volume of cube= a
3
Volume of new cube= (2a)
3
=8a
3
Divide 2 by 1
volumeofcube
volumeofnewcube
=
a
3
8a
3
Volume increased 8 times
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