Volume by Disk Method
The region R is bounded by the graphs of $$y=x$$, $$y=0$$, and $$x=1$$. Which of the following integrals gives the volume of the solid generated when R is revolved about the x-axis?
A
$$\int_{0}^{1} \pi*x\,dx$$
B
$$\pi \int_{0}^{1} x\,dx$$
C
$$\int_{0}^{1} x^2\,dx$$
D
$$\int_{0}^{1} \pi*x^2\,dx$$
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