Respuesta :
We have a SkyWheel.
We know that the angle between the gondolas is 360/41 = 8.78°.
The radius of the wheel is 181/2 = 90.5.
We know have to calculate the length of the arc between gondolas.
The length of the arc L can be calculated using proportions: the length of the arc is to the angle between gondolas as the total circumference of the wheel is to 2*pi (or 360°).
We can express this as:
[tex]\frac{L}{\theta}=\frac{C}{2\pi}[/tex]If we rearrange, we can solve for L:
[tex]\begin{gathered} \frac{L}{\theta}=\frac{C}{2\pi} \\ \frac{L}{\theta}=\frac{2\pi r}{2\pi} \\ \frac{L}{\theta}=r \\ L=\theta\cdot r=(\frac{2\pi}{41})\cdot90.5=(\frac{2\cdot3.14}{41})\cdot90.5=13.86ft \end{gathered}[/tex]NOTE: we have to express the angle theta (that is the angle between the gondolas) in radians when we want to calculate a length. That is why this angle is expressed as the total angle of the circle (2*pi) divided the 41 gondolas.
If we use 8.78°, we should express it as:
[tex]L=\theta\cdot r=8.78\degree\cdot(\frac{2\pi}{360\degree})\cdot90.5ft=13.86ft[/tex]With the factor 2pi/360 we are converting the angle in degrees into radians in order to calculate the length.
Answer: the length of the arc between gondolas is 13.86 ft.
