Math
posted by Jennifer
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.

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

Jennifer
Crust*

Ms. Sue
A = pi * r^2
A = 3.14 * 49
A = ? 
Jennifer
The answer has to be 40.8 in.

Ms. Sue
Why?
3.14 * 49 = 153.86 = 153.9 square inches 
Jennifer
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 don’t know how to solve it.

Jennifer
40.8 square inches*

Ms. Sue
A pizza crust has the same area that the whole pizza has.

Damon
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)(14^212^2)
sure enough 40.8 
Ms. Sue
Ahh  thanks Damon.

Jennifer
Lol ok thank you!!
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