school
Acemy

Volumes by Disk and Washer Methods

AP Calculus AB· difficulty 3/5

The washer method for a region between y=f(x)y = f(x) (outer) and y=g(x)y = g(x) (inner), revolved about the xx-axis, gives volume

  • A

    π∫abfg dx\pi\int_a^b f g\,dx

  • B

    ∫ab2π(f−g) dx\int_a^b 2\pi(f - g)\,dx

  • C

    π∫ab(f−g)2 dx\pi\int_a^b (f - g)^2\,dx

  • D

    π∫ab(f2−g2) dx\pi\int_a^b (f^2 - g^2)\,dx

    check_circle

Explanation

Outer disk minus inner disk: π(f2−g2)\pi(f^2 - g^2).

Want 10 more like this — adaptive to your weak spots?

Practice 10 like thisarrow_forwardPredict my AP score

Related questions

auto_awesomeAll Toolsquestion_answerHomework Q&Amenu_bookAP & SAT PreptimelineLearn Mode