Question

A bicycle with wheel radius of 20 m. is rotating 270 per min. Find the speed of the bicycle to the nearest km per hour.

Answer 1

270 rpm or 270 degrees?

Answer 2

27km

Answer 3

No direct answers @dustin-1234

Answer 4

Please need some solutions. :D

Answer 5

Does the question say 270 degrees or 270 rpm?

Answer 6

270 revolution Sorry! :D

Answer 7

6.75km

Answer 8

Ok well first we need to find the circumference of the wheel.\[circumference~=~2\pi(radius)\]

Answer 9

if the bike has a radius of 20 therefore the total length is 2*20*3.142
and if the distance is 270permeter therefore the total distance per meter using the total length is 270*2*20*3.142 meters per min , then convert . I will give the ans shortly

Answer 10

33.9kmpermin

Answer 11

Pls dont give direct answers...

Answer 12

ok sorry but u can now ccal the one in km per hr

Answer 13

so 33,933.6???

Answer 14

Yes and then we need how many in an hour, you have it for one minute. There are 60 minutes in an hour so...

Answer 15

565.56?? :D

Answer 16

Not quite, multiply 33,933.6 by 60

Answer 17

divide

Answer 18

ohh 2036016 :D

Answer 19

Yes! Then since this is in KM, and 1000m = 1km, we divide 2036016 by 1000

Answer 20

2036.016

Answer 21

Looks about right, dont forget your units though.

Answer 22

2036.016 km per hour? :D

Answer 23

Yes! Good job.

Answer 24

YEs!! Thank you very much. :D

Answer 25

That's some bike! Mach 1.65