Cake Surface Area

Decorating By thecakemaker Updated 7 Jun 2007 , 1:18pm by thecakemaker

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thecakemaker Posted 6 Jun 2007 , 7:44pm
post #1 of 10

Does anyone know the formula for figuring the surface area of a cake? I need to figure the surface area of a 16", 14", 12", 10" and 8" cake so I can figure out how much gold leaf it would take to cover them.

Thanks!
Debbie

keep in mind that it's been a very long time since i've done algebra or geometry!

9 replies
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smbegg Posted 6 Jun 2007 , 7:51pm
post #2 of 10

are you talking round, square, sheet?

Stephanie

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awolf24 Posted 6 Jun 2007 , 7:53pm
post #3 of 10

And how tall - 2", 3" or stacked layers for even higher?

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thecakemaker Posted 6 Jun 2007 , 8:33pm
post #4 of 10

sorry - 4" high round tiers.

Debbie

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MiaT Posted 6 Jun 2007 , 8:57pm
post #5 of 10

Oooh, a geeky question I can answer...

The top surface area of the round is Pi (3.14159) x radius squared. The side of the cake is essentially a long rectangle, the area of which is the height of the cake x the circumference of the round, which is Pi x diameter. Diameter is simply the width of the pan. The radius is half the diameter.

It is amazing how much useless trivia is stuck in my brain. It's a wonder I can find my way home at night icon_wink.gif

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sweetness11379 Posted 6 Jun 2007 , 9:12pm
post #6 of 10

Bravo MiaT! I'm impressed! I was just trying to remember how to figure out the circumfranceicon_smile.gif Thanks!

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thecakemaker Posted 7 Jun 2007 , 2:27am
post #7 of 10

That wasn't too bad! You should have seen me figuring out how many diamonds in what size I needed to cut out to go around a cake evenly! icon_rolleyes.gif

Thanks!
Debbie

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MiaT Posted 7 Jun 2007 , 3:19am
post #8 of 10

Hehehe, that's why I never tried one of those kind of designs. I'm so obsessive-compulsive, I'd be measuring, cutting, recutting and finessing so much, I'd probably go blind!

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thecakemaker Posted 7 Jun 2007 , 10:38am
post #9 of 10

I'm not quite that bad but almost! icon_wink.gif

Debbie

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thecakemaker Posted 7 Jun 2007 , 1:18pm
post #10 of 10

Here's a link my brother sent me that can come in handy to calculate stuff like this . . .

http://www.cleavebooks.co.uk/scol/calcyl.htm


Debbie

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