question 1 is " find the radius and the convergence of power series.

question 2 is " find the volume of the revolution created about y = 1+ sin(x) and y = 1 from x=0 to x = pi rotated about the y-axis.

4, Find the volume of the solid of revolution created about y = 1 + sin(t) and yetfrom &=0to * = i rotated about the y-axis