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anonymous
 one year ago
A giant pie is created in an attempt to break a world record for baking. The pie is shown below:
A circle is shown with a central angle marked 42 degrees and the diameter marked 30 feet.
What is the area of the slice of pie that was cut, rounded to the nearest hundredth?
78.13 ft2
82.43 ft2
86.31 ft2
91.98 ft2
anonymous
 one year ago
A giant pie is created in an attempt to break a world record for baking. The pie is shown below: A circle is shown with a central angle marked 42 degrees and the diameter marked 30 feet. What is the area of the slice of pie that was cut, rounded to the nearest hundredth? 78.13 ft2 82.43 ft2 86.31 ft2 91.98 ft2

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anonymous
 one year ago
Best ResponseYou've already chosen the best response.0The ratio of the slice's area to the circle's area is the same as the ratio of the angle to 360° \[\frac{ 42 }{ 360 }=\frac{ x }{\pi r^2 }\]

welshfella
 one year ago
Best ResponseYou've already chosen the best response.0do you need any more help? can you work out the value of the radius ( r )?

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0How do I find the radius?

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0divide the diameter by 2

welshfella
 one year ago
Best ResponseYou've already chosen the best response.0radius = half of the diameter

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0so id d=30 then the radius is 15?

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0ok so I would do x/pi*15^2 ?

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0I'd get a number for π*15² then cross multiply to find x. x is the area you're looking for

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0ok so 42/360=x/706.5 then multiply 42 and 706.5 29673 so its 360x/29673 ?

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0oh ok. so its 29673 divided by the 360

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0so the answer would be 82.425 ?

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0THANK YOU SO MUCH!!!

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0I'm new to the site how to I give you like an awards or something?

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0just hit the "best answer button" on a response from whomever you want to give a medal to

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0Ok. Can you help me on one just like this one? I think I got it but I want to be sure

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0A Ferris wheel car moves from point C to point D on the circle shown below: Circle A is shown with a central angle marked 38 degrees and the diameter marked 20 feet. What is the arc length the car traveled, to the nearest hundredth? 2.18 feet 4.31 feet 5.84 feet 6.63 feet

anonymous
 one year ago
Best ResponseYou've already chosen the best response.038/360=x/pi*10^2 38/360=x/314 360x=11932 x=33.144

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0Wait, I don't think I read the question right.....

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0you did it right, you just used the wrong formula. Area is πr². Circumference is 2πr. Arc length is part of the circumference. 38/360=x/(2πr) 38/360=x/(2π*10) 38/360=x/62.8 360x= 2386.4 x=6.62
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