Help! Need advice on that pretty little cake at SprinkleBakes...

[cheezz]

The recipe says it makes ONE 9" cake, but she baked it in two 7" springforms. I need to make a cake for a party on Saturday and my pan is 12x15x2. How many recipes of this will I need?! Also, one recipe of the frosting (with a full lb of butter) should be sufficient to frost and decorate with, shouldn't it?!http://www.sprinklebakes.com/2012/01/cherry-vanilla-layer-cake.html?showComment=1325872591568#c137203562420876825

 

[meryl]

Here's a cake pan coversion chart - Looks like you can do 2 1/2 x the recipe, but don't quote me on

that.

http://allrecipes.com/howto/cake-pan-size-conversions/

 

[meryl]

I meant "conversion". On second thought, doubling sounds like it would work better. Here's a better

chart.

Of course, you could always try 2 1/2 x, and make cupcakes with the leftover batter.

http://www.joyofbaking.com/PanSizes.html

 

[joe]

I did some math. The area of a 9" round is 64 square inches. The area of your 12 x 15 pan is 180

(I'm disregarding the depth because I assume that would be the same in either case)

I would do a triple recipe, and perhaps have a cupcake tin ready as Meryl suggested.

 

[meryl]

You're good, Joe!

 

[meryl]

How did you figure out the square inches?

 

[cheezz]

Sounds good Joe! And do you think 1 recipe of frosting would be enough?

 

[joe]

It's Pi times the radius squared. So the radius of a 9" round is 4.5" The formla is

4.5 x 4.5 x 3.1416 (Pi) = 63.61

The formula for a 7" pan is 3.5 x 3.5 x 3.1416 = 38.48

A 10" round is 5 x 5 x 3.1416 = 78.54 etc.

(Of course rectangles are easier--12 x 15 = 180)

 

[joe]

For a sheet cake, I think so. But I don't have math to back that up.

 

[joe]

This is supposed to be under the frosting question.

 

[meryl]

Huh? Sorry I asked. LOL!

 

[joe]

OK how's this: Half the diameter times itself times Pi. (3.1416) It's the same for all circles.

 

[meryl]

Duh, I'm a little slow, but I get it. Thanks!

 

[joe]

I find it so much easier to convert by square inches for cakes, casseroles, lasagna,,,,

anything that is basically flat. And it's nice to know the geometry Sister Phillip beat into me can come in handy.

 

[meryl]

Oy - geometry - my worst subject - I could never get it. Good for you for remembering the formula!

 

[cheezz]

Thanks all...will report back, with pics!

 

[mariadnoca]

Great, do tell...I want to know if it tastes as fab as it looks. smileys/wink.gif

 

[deb-in-mi]

It's been 35 years since I tackled math....oy! Makes my head hurt

 

[joe]

I know some people hate math. I love it. It makes me feel that there is order in the universe

or at least among my cake pans.