Question

Brian races his bicycle for 460 . A wheel of his bicycle turns 46 times as the bicycle travels this distance. What is the diameter of the wheel?

Use the value 3.14 for pi . Round your answer to the nearest tenth. Do not round any intermediate steps.

Answer 1

460 miles?

Answer 2

Or is it in km?

Answer 3

ft

Answer 4

The circumference of the wheel is

C = 2pi*r


Since the wheel turns 46 times, this means that the bike has rolled 46C ft

which is the same as

46*2*pi*r feet


Since we know it rolled 460 feet total, we can say


46*2*pi*r = 460


Solve this equation for r to get your answer

Answer 5

5 over pi =)

Answer 6

you got it, which approximates to what?

Answer 7

i have no idea lol

Answer 8

type 5 / pi into your calculator

Answer 9

4/pi = 90

Answer 10

hmm how are you getting that?

Answer 11

nvm tehehehe

Answer 12

https://www.google.com/search?hl=&q=5%2Fpi

Answer 13

google turns out to be a handy calculator

Answer 14

1.5915?

Answer 15

yes

Answer 16

so the radius is 1.5915 approximately, what's the diameter?

Answer 17

3.18300

Answer 18

yea baby!

Answer 19

yes, now round that to the nearest tenth

Answer 20

that rounds to 3

Answer 21

3.2

Answer 22

you got it, it's 3.2