Ask your own question, for FREE!
Mathematics 12 Online
OpenStudy (darkbeautystar):

What is the exact circumference of the circle? A. 48 inches B. 32 inches C. 16 inches D. 8 inches https://static.k12.com/calms_media/media/1419000_1419500/1419356/1/9ee5463168e0f0fa802a7e4be7f67e9f074d19ee/MS_PA_130922_171128.jpg

OpenStudy (darkbeautystar):

@rebeccaxhawaii

rebeccaxhawaii (rebeccaxhawaii):

|dw:1459877251614:dw|

OpenStudy (faiqraees):

Diameter = 2r Circumference = 2πr Circumference = 2r * π Circumference = Diameter * π

rebeccaxhawaii (rebeccaxhawaii):

you are given diameter and radius is half that - so divide your diameter by 2 to get your radius then plug it in to the formula

OpenStudy (faiqraees):

Or you can just multiply the diameter with π

OpenStudy (darkbeautystar):

What is the diameter...

OpenStudy (darkbeautystar):

16?

rebeccaxhawaii (rebeccaxhawaii):

|dw:1459877486657:dw|

OpenStudy (darkbeautystar):

Ok Thanks

OpenStudy (darkbeautystar):

50.2654824574 is the answer

rebeccaxhawaii (rebeccaxhawaii):

http://prntscr.com/aoilwx yes

OpenStudy (mathmale):

Actually, no. "Exact circumference" would require that you not round off the valule of pi. Instead, write 16pi.

OpenStudy (mathmale):

Too bad that none of the answer choices match that. 48 inches is not the "exact" circumference, altho 48 inches is closest to the exact circumference.

Can't find your answer? Make a FREE account and ask your own questions, OR help others and earn volunteer hours!

Join our real-time social learning platform and learn together with your friends!
Can't find your answer? Make a FREE account and ask your own questions, OR help others and earn volunteer hours!

Join our real-time social learning platform and learn together with your friends!