Bear in mind that if your shed has an angled roof like most do, the area of the roof will be more than 96 sq feet.
10 sq metres = 107.6 sq ft.
Plus your roof will probably overhang at the bottom edge and you'll need the pieces to overlap around all the edges.
It'll be tight and you might get away with it, but personally I'd get 2 rolls and put plenty of overlap on.
As an extra note, I'd also spend a bit more and use a really good thick felt. I went round B & Q testing the rolls of felt - if you can rip it with just your hands, don't buy it. The one I eventually bought, I couldn't rip it using my hands :)