Cube containers

Two containers shaped as cubes with edges of 0.7 m and 0.9 m replace a single cube so that it has the same volume as the original two together. What is the length of the edges of the new cube?

Correct answer:

a =  1.0234 m

Step-by-step explanation:

x=0.7 m y=0.9 m  V1=x3=0.73=1000343=0.343 m3 V2=y3=0.93=1000729=0.729 m3  V = a3 = V1+V2 a3 = V1+V2  a=3V1+V2=30.343+0.729=1.0234 m

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