Volume by Washer Method About the X-Axis

Question

Which integral represents the volume of the solid generated by revolving the region bounded by the graphs of $$y=f(x)$$ and $$y=g(x)$$ from $$x=a$$ to $$x=b$$ about the x-axis?

Accepted Answer

$$\pi \int_a^b [f(x)^2 - g(x)^2] \, dx$$

Answer

$$\int_a^b [f(x)^2 + g(x)^2] \, dx$$

Answer

$$\pi \int_a^b [f(x) + g(x)]^2 \, dx$$

Answer

$$\int_a^b [f(x) - g(x)] \, dx$$

Volume by Washer Method About the X-Axis

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