The circumference of a circle with radius 6 meters is exactly 12 pi meters. If significant figures are important, the calculated length of 37,699111843077518861551720599354 meters
must be rounded up to 40 meters
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It is: pi*6*6*4 = 144*pi cubic meters
24
37.7m
Radius of sphere is 6 meter.
Circumference equals pi times radius squared, so 3.14x36=113.04 meters.