A giant pie is created in an attempt to break a world record for baking. The pie is shown below:

Question

anonymous · Answer

attachment

anonymous · Answer

What is the area of the slice of pie that was cut, rounded to the nearest hundredth? (5 points)
Select one:
a. 79.09 ft2
b. 85.31 ft2
c. 97.23 ft2
d. 98.83 ft2

anonymous · Answer

@science0229

science0229 · Answer

since the diameter is 35ft, the radius is 12.5ft, right?

science0229 · Answer

The total area of the circle is given by pi*12.5^2 ft^2, right?

anonymous · Answer

yes

science0229 · Answer

Now, think of it this way.
total area/360 degrees=area/37 degrees
Do you understand this proportion?

anonymous · Answer

yes

science0229 · Answer

we know the total area, so substitute that in the equation to get the area of the slice.

science0229 · Answer

and i made a mistake..
sorry
the radius is 17.5, not 12.5
(stupid calculation error)
so the total area should be pi*17.5^2 ft^2

anonymous · Answer

so what would the answer be

science0229 · Answer

I think you can do the calculation by typing it in the calculator or the computer.

anonymous · Answer

its C isnt it

mathmale · Answer

Please calculate the area, sharing your work with the rest of us.  Then you should be able to determine whether or not C is correct or not.

anonymous · Answer

i did calculate it and i got 
962.1127501618741

mathmale · Answer

Is that close to any of the four answer choices?

science0229 · Answer

It seems like you have to use 3.14 for pi... http://www.wolframalpha.com/input/?i=%2837%2F360%29*3.14*17.5%5E2

anonymous · Answer

ok thanks

mathmale · Answer

3.14 as a rough value for Pi is close enough for our purposes here.
What is the area of the whole pie?
Please show your work.
Once you have that total area, multiply it by 37/360.
what do you get?

Why multiply the total area by 37/360?

anonymous · Answer

i got D so thnx guys

mathmale · Answer

:)

science0229 · Answer

welcome! :)