Question

how fast is a bicylist traveling in miles per hr if his tires are 27 inchs in diameter & his angular speed is 5pi rad per sec?

Answer 1

speed = radius*angularspeed
radius = 27/2 = 13.5 inches. convert this into miles.

angular speed = 5pi rad per sec
= 5pi/3600 rad per hour.

now multiply these values of radius and angular speed to get the speed

Answer 2

miles: 0.00022 ?

Answer 3

i dont know. just google for inches to miles converter and proceed

Answer 4

hehe. yuh. i did ;) thank u @Saikam :))