When we try a brand-new recipe, we often make a smaller sized version of the initial recipe. Because that cookies, that"s as basic as cutting the ingredients in half and making a smaller sized quantity. However for cakes, that gets fairly a bit more complicated. And - horrors - calls for some math!In this post, we define how to adjust your recipes because that the pans you have actually on hand or when you want to do a smaller cake or cheesecake because you"re no feeding a large group. Thanks to Alice Medrich native Food 52for this calculations!​

You are watching: How many square inches in a 8 inch circle

(with the number rounded approximately the nearest inch):AREA OF rectangular PANS6 x 6 = 36 square inches7 x 7 = 49 square inches8 x 8 = 64 square inches9 x 9 = 81 square inches9 x 13 = 117 square inches12 x 16 (half-sheet pan) = 192 square inchesAREA OF ring PANS5 inch = 20 square inches6 customs = 29 square inches7 customs = 39 square inches8 customs = 50 square inches9 inch = 64 square inches10 customs = 79 square inches12 customs = 113 square inches
​HOW TO use THESE NUMBERS:Once you understand the area of any kind of pan, you have the right to compare it to the area of one more pan to see how much bigger or smaller it is.You deserve to divide the area of a huge pan by the area the a little pan to figure out how plenty of times to multiply a recipe to to fill the larger pan v the same depth the batter. In ours case, we commonly are separating a bigger recipe. So, because that example, if we desire to divide a recipe designed because that a 9-inch round pan (64) and make the in a 6-inch ring pan (29), us multiple every of the ingredient by .45 or 45% (29/64). In this case, we"d round up to 50 percent for ease of switch - as long as the pan deserve to accommodate the tiny increase in complete ingredients. Because that such as little increase, it"s not most likely that the baking time would have to be boosted for most recipes.

See more: How Much Sugar Is In A 2 Liter Of Mountain Dew, 2 Liter From Pizza Plus

For squares and also rectangles: The area that a square or rectangle-shaped pan is calculate by multiplying one next times the various other side. The area of one 8-inch square is 64 square inches because 8 x 8 = 64; the area that a 9 x 13-inch pan is 117 square inches since 9 x 13 = 117. Easy.For rounds: The area of a circle equates to π time the radius squared. In case you don’t remember, π = 3.14; the radius that a circle is fifty percent of that diameter; and also squaring means multiplying a number through itself. Ready? To calculation the area of an 8-inch round pan, main point 3.14 (π) by4 (because it’s fifty percent of 8) times 4. Thus, the area of one 8-inch one is 3.14 x 4 x 4, around 50 square inches. Not so hard!​