Thursday

July 24, 2014

July 24, 2014

Posted by **ALISON** on Saturday, April 28, 2012 at 2:01am.

All I have is 9/180 is what I come up with.

2) what fraction of a circle does 3pi/4 represent?

Is 1/4 correct?

3) a ferries wheel has cars which move at 1.5mph. If the diameter of the wheel is 600 ft, how long will it take to complete one revolution? I use v=rw and get 11rev/50pi min I think I did it right but it wants 1rev/ min?

- calc -
**Damon**, Saturday, April 28, 2012 at 6:47am360/20 = 18 deg and 2pi/20 = 0.1 pi

3 pi/4 / 2 pi = 3/8

1.5 (5280 ft/3600 seconds) = 2.2 feet/second

r = 300 feet (not likely ferris wheel radius is the length of a football field but anyway)

circumference = 2 pi r = 600 pi

time to do 2 pi radians = 600 pi/2.2 = 857 seconds

857 seconds / 60 = 14.3 minutes

This must be the world's biggest and slowest ferris wheel. Are you sure the diameter is not 60 feet?

**Related Questions**

Pre-Calculus - Trigonometric Functions, Radian Measure ∏ <-- will be ...

Math - FredR - I asked about radians yesterday,you told me that a circle has 360...

pre calc - Convert the following from degrees to radians leave your answer in ...

Pre-Calc (Circles) - Describe the conditions necessary, where circle A has a ...

trig - i have to draw a flat unit circle all the way to 4 pi in radians. i can ...

Pre-Calc - Describe the conditions necessary for the two circles, where circle a...

maths - ABC is the segment of a circle with center O. This segment is enclosed ...

Maths - ABC is the segment of a circle with center O. This segment is enclosed ...

mathematics - The circle x2-2x+y2-4y-4=0 lies on the cartesian plane,question 2....

Math (FST) - 1. Give exact value of tan(theta) if cos(theta)=-2/7 and pi/2<...