Question

jenifer makes large cookies . these cokkies are 14 inches in diameter. how much icing will she need to cover the top of each cookie ?

Answer 1

Do we know how thick the icing is going on?

Answer 2

C=2piR

C=14pi

Answer 3

The volume in cubic inches of icing to cover the cookie uniformly to thickness t would be\[V(r,t)=\pi r^2t\]For this particular problem, \[v(7,t)=49\pi t\]

Answer 4

Should have been a capital V in the second equation.....

Answer 5

I don't think the circumference has too much to do with this problem.

Answer 6

I would think volume will give the amount of icing it takes to make a cake, but what you use around it. I agree circumference concerns with the top not surrounding...but can you explain a little for the volume?

Answer 7

That's the way these things are measured. Just like if when you paint, you cover a given area, but you measure the amount of paint in liquid measure (volume). If you assume icing always goes on at a particular thickness, you could just determine the area, but I think that's a math book answer without any real-world value.

Answer 8

good enough. thanks for taking the time

Answer 9

No sweat.