SOLUTION: IF the navy pier ferris wheel in chicago has a circumference that is 56% of the circunference of the first ferris wheel built in 1893. a. What is the radius of the navy pier wheel

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Question 342791: IF the navy pier ferris wheel in chicago has a circumference that is 56% of the circunference of the first ferris wheel built in 1893.
a. What is the radius of the navy pier wheel?
b. what was the radius of the first ferris wheel?
c. The first ferri wheel took nine minutes to make a complete revolution. how fast was the wheel moving?
C=439.6 ft.
Answer by ankor@dixie-net.com(22740) About Me  (Show Source):
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IF the navy pier ferris wheel in chicago has a circumference that is 56% of the
circunference of the first ferris wheel built in 1893.
:
a. What is the radius of the navy pier wheel?
Assume that the "C=439.6" is the circumference of the navy pier wheel
Find the radius
2%2Api%2Ar = 439.6
r = 439.6%2F%282%2Api%29
r = 70 ft is the radius of the navy pier wheel
:
b. what was the radius of the first ferris wheel?
let f = circumference of the 1st wheel
.56f = 439.6
f = 439.6%2F.56
f = 785 ft is the circumference of the 1st wheel
Fin the radius
r = 785%2F%282%2Api%29
r = 125 ft is the radius of the 1st wheel
:
c. The first ferris wheel took nine minutes to make a complete revolution. how fast was the wheel moving?
785%2F9 = 87.2 ft/sec is the speed of the 1st wheel