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Mathematics 14 Online
OpenStudy (samara8954):

The circle-shaped part of the necklace above has a diameter of 5 mm. The circumference of the circle-shaped part of each of the earrings is one-half the circumference of the necklace. What is the circumference of the circle-shaped part of one of the earrings? (Use 3.14 for .) 7.85 mm 15.7 mm 31.4 mm 3.925 mm

OpenStudy (samara8954):

@Legends

OpenStudy (samara8954):

is it 7.85

OpenStudy (samara8954):

yes or no?

OpenStudy (diamondboy):

how did u get that?

OpenStudy (samara8954):

3.14*25

OpenStudy (samara8954):

@Legends

OpenStudy (diamondboy):

remember that's d diameter not the radius so u have to divide 5 by 2

OpenStudy (samara8954):

2.50

OpenStudy (diamondboy):

yeah so go ahead and use this formula 2Pir

OpenStudy (diamondboy):

2(3.14)(2.5)

OpenStudy (samara8954):

15.7

OpenStudy (diamondboy):

that's the answer

OpenStudy (samara8954):

wrong

OpenStudy (diamondboy):

so sorry just read d question again that should be d circumference of d necklace

OpenStudy (diamondboy):

the answer is 7.85?

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