# Math

A large pizza has a total diameter of 14 inches and a cross that is 1 inch wide. What is the area of the crust? Round to the nearest tenth.

1. 1
1. ??a cross that is 1 inch wide???

posted by Ms. Sue
2. Crust*

posted by Jennifer
3. A = pi * r^2

A = 3.14 * 49

A = ?

posted by Ms. Sue
4. The answer has to be 40.8 in.

posted by Jennifer
5. Why?

3.14 * 49 = 153.86 = 153.9 square inches

posted by Ms. Sue
6. Because I need to find the area of the crust not the whole pizza. The answers in the back on my book say it should come to 40.8 inches, but I donâ€™t know how to solve it.

posted by Jennifer
7. 40.8 square inches*

posted by Jennifer
8. A pizza crust has the same area that the whole pizza has.

posted by Ms. Sue
9. LOL, I think she just wants the part you see from above
If D is 14 then the slimy area has diameter of 12 because you take and inch off each side.
so
area of a circle = pi d^2/4
(pi/4)(14^2-12^2)
sure enough 40.8

posted by Damon
10. Ahh -- thanks Damon.

posted by Ms. Sue
11. Lol ok thank you!!

posted by Jennifer

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