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Mathematics 15 Online
OpenStudy (moldybubblegum11):

I need help with diameter.

OpenStudy (moldybubblegum11):

OpenStudy (moldybubblegum11):

sorry it took so long.

Vocaloid (vocaloid):

hint: circumference = pi * d if 28 pi = pi * d what is d?

ILovePuppiesLol (ilovepuppieslol):

do you know the formula for circumference of a circle?

ILovePuppiesLol (ilovepuppieslol):

alright @Vocaloid can help u

OpenStudy (moldybubblegum11):

d = diameter right?

Vocaloid (vocaloid):

yes, but what number does that equal to?

OpenStudy (moldybubblegum11):

if the circumference is 28 than the diameter should be 14.

Vocaloid (vocaloid):

think carefully

Vocaloid (vocaloid):

circumference = pi * diameter 28 * pi = diameter * pi what is diameter?

OpenStudy (moldybubblegum11):

87.96452?

Vocaloid (vocaloid):

hint: cross out pi on both sides

Vocaloid (vocaloid):

|dw:1480615403008:dw|

Vocaloid (vocaloid):

|dw:1480615408722:dw|

Vocaloid (vocaloid):

what is the diameter?

OpenStudy (moldybubblegum11):

28? ;-;

Vocaloid (vocaloid):

good job!

OpenStudy (moldybubblegum11):

im sorry

Vocaloid (vocaloid):

(nah don't apologize it's cool) if diameter = 28, what's the radius?

OpenStudy (moldybubblegum11):

14

Vocaloid (vocaloid):

good job! that's your answer for part 1 part 2 is the same thing, except with 32 pi instead of 28 pi. do you think you can give it a go?

OpenStudy (moldybubblegum11):

yes.

Vocaloid (vocaloid):

cool lemme know what you get

OpenStudy (moldybubblegum11):

d = 32 r = 16

Vocaloid (vocaloid):

perfect!

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