Valentina has a tray where she keeps all of her important papers. the tray is in the shape of a rectangular prism with no top. what is the volume of papers that the tray can hold? 160 180 280 300 height - 2.5 inches length- 10 with- 12 hurry. i will mark brainliest if i get it correct!

1- is the product of two rational numbers irrational or rational? first, make a hypothesis by multiplying two rational numbers. then, use variables such as x=a/b and y=c/d and the closure property of integers to prove your hypothesis. 2- what do you think the product of a nonzero rational number and an irrational number is? is it rational or irrational? make use of variables, the closure property of integers, and possibly a proof by contradiction to prove your hypothesis. 3- why do we have to specify that the rational number must be nonzero when we determine what the product of a nonzero rational number and an irrational number is? if the rational number were 0, would it give us the same result we found in part b?