







Cutting a round cake so that it doesn't dry out 
20140826 

From James: I'm wondering if there's a simple way to calculate the area between two parallel chords of a circle equidistant from its diameter, or if I have the area, to find the distance between the two chords.
Here's my "problem". You may have heard of the way of cutting a round cake so that it doesn't dry out  make two parallel cuts (chords) the length of the cake, take the middle piece, then push the two pieces together.
So I know the area of a 12" cake, and I want say, exactly an eighth of the cake. How wide do I cut the centre piece?
Now to get even more difficult, the next day I want another eighth from the centre. How wide do I cut the next pieces, and so on...?
Thanks,
James Answered by Harley Weston. 





Frosting a three layer cake 
20121030 

From johnathan: Each layer of a 3 layer cake is a cylinder with height 7.5 cm. The bottom layer has diamegter 25 cm. The middle layer has dimegter 22.5 cm. The top layer has diameter 20 cm. The surface of the cke is frosted. What area of the cake is frosted. I get 1695.56 but the answer in the book is 2081.3 Answered by Penny Nom. 





The diameter of a cake 
20110606 

From nurul: Best Bakery shop received an order from your school to bake a 5kg of round cake for teachers day celebration. if a kilogram of cake has a volume of 3800cm^3,and the height of cake is to be 7.0cm, calculate the diameter of the baking tray to be used to fit the 5kg cake ordered by your school?(used pai=3.142) Answered by Penny Nom. 





May Lee's cake 
20100918 

From Wafa: May Lee bought a cake which is circular in shape. Her sister ate a quarter of the cake. Given that the area of the top surface of the remaining portion is 520 square cm, find the diameter of the cake. Answered by Penny Nom. 





A 3D cardboard cupcake 
20100130 

From Margaret: Hi,
I'm an art student and I'm attempting to build a 3D cupcake out of cardboard.
I want it to have a circular base of 8.5 inches and sides that are 7'' tall and slope outward so the top of the base is 29'.
The top with the frosting would be a detachable lid made from a cone with a base circumfrance of 29".
My problem is how to cut the side so they will slope out, I'm pretty sure there needs to be a curve, however I don't how to calculate the degree of it.
Ideally I want the sides to be a single piece of cardboard.
I also don't know how to calculate the arc needed to make a cone who's circular base's circumfrence is 29''.
Thanks,
Margaret Answered by Stephen La Rocque. 





A cake must be divided evenly 
20090120 

From kelen: a 10 inch by 10 inch square cake must be divided evenly among 5 people. the top
and all four sides of the cake are frosted. each person must receive the same
amount of cake and the same amount of frosting. there must be no cake left over.
how can this be done? Answered by Robert Dawson. 





Sharing a cake 
20071203 

From Nikheel: Amar baked a cake.
john ate 1/6 of the cake.
susan ate 1/5 of what was left.
chan ate 1/4 of what was left.
cindy ate 1/3 of what was left.
luigi ate 1/2 of what was left.
how much of the original cake was left. Answered by Stephen La Rocque. 





Cutting a cake 
20070913 

From Bibi: how can one cut 8 pieces from a round cake with 3 straight slices of a knife, without moving any of the pieces? Help me explain this.. Answered by Stephen La Rocque. 





Cakes and ribbons 
20010705 

From Jennifer:
 A cake recipe calls for 3 1/4 cups of flour. You already put in 1 3/4 cups. How much more should you add?
 You have 3/4 yard of ribbon. How many 1/8yard pieces can you cut the ribbon into?
Answered by Penny Nom. 





Cutting the cake 
20001005 

From Cherie: How can you divide a cake (circle) into 14 pieces by using only 4 straight lines? Answered by Penny Nom. 

