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Answer:
A
Explanation:
given the radius is x , then diameter = 2x and height = 2x - 1
the volume (V) of a cylinder is calculated as
V = πr²h ( r is the radius and h the height ) , then
V = πx²(2x - 1) ← distribute parenthesis by πx²
= 2πx³ - πx² in³
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