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We're assuming that the question refers to a sphere.
If 'D' is the diameter of a sphere, measured in meters,
then the volume of the sphere in cubic meters is:
(1/6) (pi) (D)3 .
For (pi), use 3.142 or (22/7) .
There isn't one. Cubic metres is a measurement of volume, kilojoules is a measurement of work. There is no relationship between the two.