Volumes by Disk and Washer Methods

AP Calculus AB· difficulty 2/5

For y=cy = c (constant) revolved on [a,b][a, b] about xx-axis: Volume is

  • A

    πc(ba)\pi c (b - a)

  • B

    c(ba)c (b - a)

  • C

    πc2(ba)\pi c^2 (b - a)

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  • D

    2πc(ba)2\pi c (b - a)

Explanation

Cylinder volume: πr2h=πc2(ba)\pi r^2 h = \pi c^2 (b - a).

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