Dimensions 3086

The red cube has an edge 0.2 dm smaller than the blue cube. The surface of the blue cube is 294 cm2. What are the dimensions of the cubes?

Correct answer:

a =  7 cm
b =  5 cm

Step-by-step explanation:

S=294 cm2 S=6a2 a=S/6=294/6=7 cm
x=0.2 dm cm=0.2 10  cm=2 cm  b=ax=72=5 cm



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