Cake question

Thank you JackyB

9" x 9" is 81 sq. in.

So you need 2 tins of about 40 sq. in. each.

If they are circular, and both the same size, as Springy Chicken says, 7" should do it. If they are square, they should be somewhere between 6" and 7".

I found a way of calculating the radius and diameter from the area on this website:

keisan.casio.com/exec/system/1355985793

Cooking is science - baking even more so!

Thank you all that’s really helpful I’m going to make it tomorrow now as I realised I need a lemon and more glacé cherries.

Thanks Teetime useful info. I just fill a tin and then guess what size I need for the remaining mixture, No science, just guesswork! Doesn't work well with sponges though

By my reckoning, two 7 inch round cake tins would be equivalent to a 9 inch square tin and produce cakes of the same height as the square one.

www.deliaonline.com/information-centre/scaling-up-cake-recipes

this link should help