Can I get help please asap

The first hexagon is dilated to form the second hexagon select the answers from the drop box menus to correctly complete the statement

Find the volume of the solid obtained by rotating the region enclosed by the curves y=1x and y=7^-x about the x-axis. (use symbolic notation and fractions where needed.) volume =

Find two consexutive odd integers such that the sum of their square is 650