Volume of the solid formed when area is rotated on x-axis or y-axis using integration

Using integration to find the volume of the solid formed by rotating the area enclosed by the curve the axis and lines.
Volume of revolution of an exponential function e^x on the x-axis 0:53
Volume of revolution of a quadratic x^2/4 on the y-axis 2:05
Volume of revolution of a trigonometric function on the x-axis suing the odd powers of sin(x) to integrate 3:10
Volume of revolution of a curve SQRT(x) on the y-axis 4:35