Question 252445
a painted 2 x 2 x 2 cube is cut into eight unit cubes . if you consider the total surface area of all eight small cubes , what fraction of this total surface area is painted 
a 1/8 b 1/4 c 1/2 d 5/8 e 3/4
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The surface area of a cube with sides s = 6s^2
The painted surface is 6*2^2 = 24 sq units
The total area after cutting is 8*6*1^2 = 48 sq units
So it's 1/2