Volume of a sphere = 4/3*pi*radius3
Volume (space occupied) = 4/3*pi*103 = 4188.790205 or 4189 cubic cm to 4 sig fig
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Multiply the diameter by pi, which is approximately 3.14.
A circumference of 62.8cm
A sphere with a diameter of 20 cm has a volume of 4,188.79 cm3
Strange p-gram to have a diameter! Area is 30 x 20 ie 600 cm2
It is 400cm or 4 meters