Please help

1. Write the integral(s) to find each of the following for the region R bounded by x 2 0, x s 10, y s %x + 5, and y 2 V2.5x. Do not integrate. You do not have to redraw the region. a. The area of R. b. The volume of the solid generated by revolving R about the y-axis using shells c. The volume of the solid generated by revolving R about the y-axis using washers