If a menu-driven program uses a loop to redisplay the menu after a selected operation has been performed, the menu should probably have an item that the user can select to

That the user can select to either reset the options, or go back to a previous screen, if you can show me options ill tell you which one.

Hypothesis: volumes of both figures are equal.the volume of  figure 1 is: .the volume of figure 2 is: .since , you can conclude that and . so, .volumes of figures are equal only when an angle in the basis is right (then figures will be the same), in another cases volume of figure 1 is less than volume of figure 2.the hypothesis was not correct in all cases.