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anonymous
 one year ago
i'll medal please help
anonymous
 one year ago
i'll medal please help

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anonymous
 one year ago
Best ResponseYou've already chosen the best response.0can someone explain how to do it and not just give me the answer please

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0circumference of a semicircle: (1/2) x pi x d where d is the diameter

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0so what is the diameter of the semicircle?

ybarrap
 one year ago
Best ResponseYou've already chosen the best response.2What is r here? That's that's the hardest part of the problem. dw:1434406738797:dw

ybarrap
 one year ago
Best ResponseYou've already chosen the best response.2What is the relationship between r and 3 ?

ybarrap
 one year ago
Best ResponseYou've already chosen the best response.2So the answer is \(\pi\times r\). So all you need to find is r. Any guesses?

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0oh sorry i was eating let me look

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0@ybarrap well 2 x pi is 6.28

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0i still dont know how to find r im sorry im bad at this

ybarrap
 one year ago
Best ResponseYou've already chosen the best response.2Do you see that what r is now?

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0so is the answer 18.84?

ybarrap
 one year ago
Best ResponseYou've already chosen the best response.2Yes! So the answer is ....

ybarrap
 one year ago
Best ResponseYou've already chosen the best response.2\(\pi\times r\), which is half the circumference of a circle with a radius of r

ybarrap
 one year ago
Best ResponseYou've already chosen the best response.2you know \(\pi\) and you know r  just multiply

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0okay, thank you so much for your help! :)
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