Question

A phonograph record with diameter 12 in. rotates at 45 rev./min. Find the distance that a point on the rim travels in one minute.

Answer 1

@CyberShadow @iPwnBunnies @mathmale @satellite73

Answer 2

revolutions

Answer 3

@tHe_FiZiCx99

Answer 4

turn turn turn

Answer 5

Hey!!! Anybody home? @hello1213

Answer 6

@ParthKohli

Answer 7

@amistre64

Answer 8

I have no freakin idea. I just wanted to say you have a cool profile picture.

Answer 9

oh haha thanks!

Answer 10

what is the circumference?

Answer 11

it travels 45 circumferences in 1 minute ....

Answer 12

hmm isn't circumference the area around a circle?? :/

Answer 13

the perimeter, but yeah

Answer 14

\[\pi=\frac{C}{d}\]
\[d~\pi=C\]

Answer 15

okay so what do I plug in... I know d=12 right?

Answer 16

d=12 yes, and pi is pi ... C = 12 pi inches, multiply by 45

Answer 17

So 1696.5 ?

Answer 18

45*12 pi = 540 pi which is about 1695.6 yeah

Answer 19

it says to give answers to significant digits,

Answer 20

i never did understand the significant digits stuff that well.

Answer 21

so I think 1700... thanks for the help!

Answer 22

good luck ;)