Use NAND operator to write; P or Q, and P -Q make an everyday implication sentence using only NAND

Hence the answer is given as follows,

Explanation:

By using the NAND operator:-

P or Q and P -Q make an everyday implication sentence using the only NAND is given as,

It's ✌✌✌✌✌✌

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.