Question

1 Let R be a region bounded between two curves on the r, y-plane. Suppose that you are asked to find the volume of the solid obtained by revolving the region R about the r-axis If you slice the region R into thin horizontal slices, i.e., parallel to the r-axis, in setting up the Riemann sum, then which method will come into play? A. Disc method B. Washer method C. Either disc or a washer method depending on the shape of the region R D. Shell method Let V be the volume of the solid whose base is the region bounded by the curve y- V1- 2 and the r-axis on -1,1, aud whose cruss sections throug the sulid perpendicular to the r-axis are isosceles right triangles with a horizontal leg on the x, y-plane and a vertical leg above the r-axis. (See the figure below.) Which of the following is correct? -1 Let V e the volume of the solid whose bage is the region udo by the eurve V1-z2 and ther-axis on |-1,1. and whoee cross sections throagh the solid perpendicula to the r-axis are isoaceles right triangles with a horizontal leg on the z. y-plane and a vertical leg alove the r-axs. (Sethe fue lekow.) Let R be a region bounded between two curves on the r,g-plane. Suppose that ou are asked to tind the volune of the solid obtained by revolving the region t about the r-axis If you slice the region R into thin horizontal slices, e., parallel to the z-nxis, in setting up the Riemann sum, then which method will come into play? A. Disc metbod Which of the following is correct? C.Eitber disc or a asber method depending on tbe shape af the region R D. Shell method

Answer 1

X-SU)