a) Find the volume of the solid formed when the area bounded by the curve y = 1/(3x+4), the coordinate axes and the line x=2 is rotated one complete revolution about the x-axis.

b) Evaluate the integral of f(x) between 3 and -3

WHEN f(x) = x+1 (when x<1) and f(x) = 2x (when x >(and equal to) 1)

I am unsure how to complete these two questions, any help is greatly appreciated, thank you