WW Food and Point Issues - Dairy Queen Icecream Cake

Does anyone know what a serving of the DQ icecream cakes are, what the serving sizes are, and how many points?

I used to have a fast food guide from WW, but I don't have it anymore. And I had a birthday, and my mom bought me a log style ice cream cake.

My Fast Food Companion says: DQ Frozen 8" Round Cake (undecorated) 1/8 of cake 8 pts.