Cake bakers help please

catzwhiskaz, Jan 8, 10:39pm
If a cake is meant to be baked in a 8 inch round tin and i want to bake in a 9 inch and have a higher cake.If i double the mix how much longer would I need to leave in the oven????

harrislucinda, Jan 8, 10:52pm
canaddafewminmorebutwillbeokwiththetimegiven

dbab, Jan 8, 10:55pm
I think double the mixture would overflow your 9 inch tin.

catzwhiskaz, Jan 15, 2:40pm
its a pretty flat cake in the 9inch tin.I beleive a chocolate type cake mix should fill half the tin?? before baking