Answer the following:

Problem No. 7: The area of the region R is completely enclosed by the graph of the function y= x-x and the (1,0) x-axis found in Quadrant 1 as shown in Figure 3. Figure 3 50. Which method(s) of strip is (are) applicable in finding the area of the shaded region? A. Horizontal strip only C. Both horizontal and vertical strips B. Vertical strip only D. Neither horizontal nor vertical strips 51. If the shaded region is rotated about the y-axis, then the volume of the solid revolution can be defined as A. no(x-x3 )dx C. 2nf (x -x3 ) dx B. nfox(x -x3 ) dx D. 2nfox(x- x3 )dx 52. If the shaded region is rotated about the y-axis, then the volume of the solid revolution can be defined as (2 points) 2 A. IT CU. U. B. = It CU. U. C. It CU. U D. - It CU. U. 15 15