Answer: The answer is 972.
Step-by-step explanation: The formula for the volume if a cylinder is πr2h and the radius is 9 and to the second power is 81. So then the radius multiplied by the height (which is 12) is 972 which is the answer.
The volume of cylinder is 972π mm³.
A cylinder is "a three dimensional solid that holds two parallel bases joined by a curved surface at a fixed point".
According to the question,
Radius of the cylinder = 9 mm
Height of the cylinder = 12 mm
Volume of the cylinder = πr²h
= π × (9)² × 12
= π × 81 × 12
= 972π mm.
Hence, the volume of cylinder is 972π mm³.
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