Question
I have problems working word problems. The word problem that I would like someone to look at is. For a holiday party, Barbara is making a seven-layer torte,which consists of seven 9-inch diameter cake layers with a creamtopping on each layer. She knows that one recipe of cream willcover 50 square inches of cake. How many batches of the toppingmust she make to complete her torte? (Use =3.14 as anapproximate value). I have problems working word problems. The word problem that I would like someone to look at is. For a holiday party, Barbara is making a seven-layer torte,which consists of seven 9-inch diameter cake layers with a creamtopping on each layer. She knows that one recipe of cream willcover 50 square inches of cake. How many batches of the toppingmust she make to complete her torte? (Use =3.14 as anapproximate value).
Explanation / Answer
Well, if i did this correctly, try this: If diameter is 9, then the radius is half of 9 which is4.5 So the Surface Area of a circle is pi x r^2, so 3.14 x4.5^2 That gives us 445.095 inches squared. (Which is huge for acake thing) So if the one batch of icing is 50 square inches, we divide445.095 by 50 getting: 8.9019 batches of icing So depending on your teacher's prefrences, that is 9 batcheswith no decimals, or the 8.9019 batches. I hope this helps and/or makes sense. Let me know if somethingdoesn't make sense, and I will try to clear it up.