Adding Products

[Guest]

I need to add two products together in order to come up with a sum. I need to
multiply F9 and H9 together, and then F10 and H10 together, then add the
products. I really have no idea how to form an equation in F12 to make this
work. Any help would be greatly appreciated! Thank you!

 

[Guest]

=SUMPRODUCT(F9:F10, H9:H10)

Or

=(F9*H9)+(F10*H10)