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anonymous
 one year ago
A certain windshield wiper clears a portion of a sector as shown. If the angle that the wiper pivots during each swing is 120°, find the area of the windshield that is cleaned during each swing.
anonymous
 one year ago
A certain windshield wiper clears a portion of a sector as shown. If the angle that the wiper pivots during each swing is 120°, find the area of the windshield that is cleaned during each swing.

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Z4K4R1Y4
 one year ago
Best ResponseYou've already chosen the best response.1have you done radians?

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0@Z4K4R1Y4 nope I have no idea what that is

Z4K4R1Y4
 one year ago
Best ResponseYou've already chosen the best response.1dw:1433038449394:dw does this make sense?

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0yes a little thank you @Z4K4R1Y4

Z4K4R1Y4
 one year ago
Best ResponseYou've already chosen the best response.1so what would be the area of the full circle i've drawn?

Z4K4R1Y4
 one year ago
Best ResponseYou've already chosen the best response.1now we want to find the sector with angle 120

anonymous
 one year ago
Best ResponseYou've already chosen the best response.045238.9342? @Z4K4R1Y4

Z4K4R1Y4
 one year ago
Best ResponseYou've already chosen the best response.1full circle = 360 degrees

Z4K4R1Y4
 one year ago
Best ResponseYou've already chosen the best response.1if we divide 360 by 120 we get three

Z4K4R1Y4
 one year ago
Best ResponseYou've already chosen the best response.1so that means 120 is 1/3 of 360. right?

Z4K4R1Y4
 one year ago
Best ResponseYou've already chosen the best response.1so if the area of full circle (angle 360) is 1256.63 then the area of the sector of angle 120 would be 1/3 of 1256.63. right?

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0It would be 418.876667? @Z4K4R1Y4

Z4K4R1Y4
 one year ago
Best ResponseYou've already chosen the best response.1now for the next part...

Z4K4R1Y4
 one year ago
Best ResponseYou've already chosen the best response.1dw:1433039404347:dw

Z4K4R1Y4
 one year ago
Best ResponseYou've already chosen the best response.1\[area of full circle = \pi * r ^{2}\] ... but this time r =5

anonymous
 one year ago
Best ResponseYou've already chosen the best response.078.5398163? @Z4K4R1Y4

Z4K4R1Y4
 one year ago
Best ResponseYou've already chosen the best response.1now for the area of the sector of angle 120.

Z4K4R1Y4
 one year ago
Best ResponseYou've already chosen the best response.1area of full circle (360 degrees) = 78.53... so area of sector of angle 120 would be 1/3 of 78.53...

Z4K4R1Y4
 one year ago
Best ResponseYou've already chosen the best response.1yh we're caculating the white part of raius 5

Vocaloid
 one year ago
Best ResponseYou've already chosen the best response.0alright, just making sure, I saw your diagram had the arrow pointing to the black part as the part not cleared by the wiper

Z4K4R1Y4
 one year ago
Best ResponseYou've already chosen the best response.1the second diagram is only showing the white part

Z4K4R1Y4
 one year ago
Best ResponseYou've already chosen the best response.1@alexwaldorf do you under stand the calculation?

Vocaloid
 one year ago
Best ResponseYou've already chosen the best response.0yeah, sorry about interrupting, my mistake D:

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0yes a little lol @Z4K4R1Y4

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0it's okay thanks :) @Vocaloid

Z4K4R1Y4
 one year ago
Best ResponseYou've already chosen the best response.1so what would be the area of the sector in the second part? @alexwaldorf

Z4K4R1Y4
 one year ago
Best ResponseYou've already chosen the best response.1not quite. area of full circle = 78.53982.. area of sector of angle 120 would be 1/3 of that.

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0oh so is it 23.17994? @Z4K4R1Y4

Z4K4R1Y4
 one year ago
Best ResponseYou've already chosen the best response.1yes!... do you understand why it's 1/3 of full area?

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0yes I do :) @Z4K4R1Y4

Z4K4R1Y4
 one year ago
Best ResponseYou've already chosen the best response.1good. finally we have...

Z4K4R1Y4
 one year ago
Best ResponseYou've already chosen the best response.1dw:1433040636347:dw

Z4K4R1Y4
 one year ago
Best ResponseYou've already chosen the best response.1area of sector of radius 20 (15+5) = 418.87.. and area of sector of radius 5 (white part) = 23.17...

Z4K4R1Y4
 one year ago
Best ResponseYou've already chosen the best response.1does that make sense?

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0so is 23.17 the answer?

Z4K4R1Y4
 one year ago
Best ResponseYou've already chosen the best response.1not quite. the area we need to find is the black part.

Z4K4R1Y4
 one year ago
Best ResponseYou've already chosen the best response.1dw:1433041243267:dw

Z4K4R1Y4
 one year ago
Best ResponseYou've already chosen the best response.1that is correct but if you put all the decimals in from both calculations you will get 392.6990817.

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0so is that the final answer lol @Z4K4R1Y4

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0so we're done that's it?? @Z4K4R1Y4

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0oh my goodness thank you so much you're the best @Z4K4R1Y4 I really really appreciate it

Z4K4R1Y4
 one year ago
Best ResponseYou've already chosen the best response.1no problem. you're welcome

Z4K4R1Y4
 one year ago
Best ResponseYou've already chosen the best response.1I've got to go now...bye

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0have a great night, thanks a bunches!! @Z4K4R1Y4
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