<PRE><B>Question 945433</B>
 the edge of a cube is 80 cm long.
 how will its volume and surface area change if its edge is decreased by 10%?
:
The edge will be reduced by 10% of 80 which is 8 cm, making the edge = 72 cm
:
80^3 - 72^3 = 138,752 cu/cm reduction in volume, 
:
6(80^2) - 6(72^2) = 7,296 sq/cm reduction in surface area 
:

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