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December 21, 2014

December 21, 2014

Posted by **Kathy** on Tuesday, June 29, 2010 at 9:57pm.

1. Find the area of the whole pizza.

a=(pi)(10^2), =314

2. What is the area of one piece of pizza?

(pi)(r^2)/16, 100(pi)/16=19.6

3. What is the area of a half-piece?

100(pi)/36=10

4. What would the area of the whole pizza be if it were made of half pieces?

a=10(pi), a=100/10, a=10

5. What is the radius of a half-piece? (ie, where do I need to cut to make two equal halves out of a piece?)

I was wondering if I got these answers correct. If I did not, could someone please explain what I did wrong?Also, I was a little confused as to how to get the answer to the last question. Cheers!

- Geometry -
**Henry**, Wednesday, June 30, 2010 at 10:12pm1. Correct.

2. Correct.

3.Incorrect. If the pie was cut into 16

slices,each slice is 1/16th of the total area.A 1/2 slice would be 1/32nd

(1/2*1/16)of the total area: A=3.14*10^2/32=9.8sq.in.

4.You can cut the pizza into as many piecse as you like; the area will be

the same if you do not change the radius. A=3.14*10^2=314 sq.in.

5. If cut properly the radius will be the same, but the area will be 3.14*10^2/32. I hope this will help.

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