If each edge of a cube is reduced by 25%, find thepercentage decrease

1.	If each edge of a cube is reduced by 25%, find thepercentage decrease in its total surface area. explain
Answer» Let each edge of CUBE be 10 units Then, its SURFACE area = 6a 2 =6×10 2 =600sq.units New edge =10+25% of 10=12.5 units ∴ New, surface area =6×(12.5) 2 =937.5sq.units % INCREASE = 600 937.5−600 ×100=56.25%

If each edge of a cube is reduced by 25%, find thepercentage decrease in its total surface area. explain

Answer»

Let each edge of CUBE be 10 units

Then, its SURFACE area = 6a

=6×10

=600sq.units

New edge =10+25% of 10=12.5 units

∴ New, surface area =6×(12.5)

=937.5sq.units

% INCREASE =

600

937.5−600

×100=56.25%

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If each edge of a cube is reduced by 25%, find thepercentage decrease in its total surface area. explain​

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If each edge of a cube is reduced by 25%, find thepercentage decrease in its total surface area. explain