# Disk Method Problem Solver

Use the Geogebra Applet to create a solid through the rotation of a graph round the x- or y-axis.[br]
##### 1.
﻿Find exact the volume of the solid formed when the graph of the parabola $y=\sqrt{2x}$ over [0,4] is rotated around x-axis through the angle of $2\pi$ radians.
##### 2.
Find the volume of a sphere with radius R=a.
##### 3.
Find the exact volume of the solid when the region enclosed by ﻿﻿$y=\sqrt{3x}$,y=3 and x=0 is revolved about the y-axis.[br]
##### 4.
Find the volume of the solid formed when the graph of the curve $y=e^{x-1}$ is rotated $2\pi$ radians about the x-axis between x=0 and x=1.