Its area is: 4*pi*81 = 1017.876 square units to 3 decimal places
Its volume is: 4/3*pi*729 = 3053.628 cubic units to 3 decimal places
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The volume of a sphere whose radius is 9 meters is: 3,054 meters3
The sphere's surface area is ~1,017.9 square units.
9
3,053.6 cm^3
The volume is 3,053.63 mm3