Please help me with this question

What is the volume of a rectangular prism if the length is 10.4 mm the width is 5 mm in the height is 8 mm

To which sets of numbers does -12 belong? choose all answers that are correct. a) natural numbers b) integers c) real numbers d) irrational numbers

At 6 1/2 cents per pound of string beans how much does 7 pounds cost