Volumes by Disk and Washer Methods

AP Calculus AB· difficulty 3/5

A washer cross-section (between curves ff outer and gg inner) has area

  • A

    π(f2g2)\pi(f^2 - g^2)

    check_circle
  • B

    πfg\pi f g

  • C

    π(fg)\pi (f - g)

  • D

    π(fg)2\pi(f - g)^2

Explanation

Outer disk minus inner disk.

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