Question

Make up a multiplication problem in which the factors are both decimals and the product can be expressed as "a number between 8 and 15".

Answer 1

Many examples can be used for this such as 3.5×4.2. This answer lands between 8 and 15.

Answer 2

3.1*3.1 works 
3.2*3.2 also works
π² also works
8.1*1 is another solution
in short, there are an infinite number of possibilities