# Math

The diameter of a tire is 2.5 ft. What is the circumference of the tire? About how many times will thee tire have to rotate to travel in 1 mile? 5280 ft.

A. 5 ft?

B. 1,056ft???

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1. The circumference is not 5 feet.

C = pi * d

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👤
Ms. Sue

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3. C = 7.85

Then divide 5280 by 7.85
= 672.6

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4. C = pi x d
C=3.14 x 2.5
C = 7.85

Then divide 5280 by 7.85
= 672.6 revolutions in one mile

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5. These answer are ALL wrong!!!

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6. tbh i kinda dont care if i get this one wrong i just wanna finish my homework

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7. I gotta agree with you on this one mate

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9. A. YOU need to multiply 3.14 by 2.5
it equals 1.14 x 2.5
that equals 7.85
u have to round it so the final answer is 8

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10. B. 1 mile = 5,280 feet
1 rotation is 7.85
5,280/7.85 = 672.611465

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11. HERE'S HELP
1 mile = 5,280 feet
1 rotation is 7.85
5,280/7.85 = 672.611465

A. circumference is: 7.85 inches
B. it will rotate: 672 times
This is where you need to be.....

2.5 diameter times pi
gets you to 7.85 ft that is one rotation distance.
One miles is 5280 feet
you divide now your 7.85 into the 5280 and see how many times the tire will rotate .. the answer is that 672.611 number but the answer is 672
it will rotate 672 times to get a mile down the road because the circle is taking up seven inches to make a full rotation. get it? you're welcome!

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12. The circumference is the line from the center of the circle to the edge of the circle, so if the hight of the circle is 2.5, we would have to divide it by 2 to get half the circle.

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13. My bike tire has a diameter of 2 ft. What is the circumference?

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14. so can i get answers

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16. that's just why tooooo long seriously he or she downloaded the bee movie on the computer and put the written titles on here just why

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17. bruh im just trynna get help on this.

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18. *wings in on beautiful stared wings and lands in front of the caous, flapping wings to get attention*
Dragons of Pyrria!
C = pi x d
C=3.14 x 2.5
C = 7.85

Then divide 5280 by 7.85
= 672.6 revolutions in one mile

Bring peace to Pyrria!
*gracefully flies away, everyone gazing after her*

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19. i am putting my complete trust in this person. this better be correct. thank you

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20. I believe what they are saying is that the circumference of a circle is equal to 3.14 times the diameter. In this specific problem the diameter is 2.5.
The circumference is equal to 3.14 times the diameter 2.5 which makes 7.85 your circumference.
Divide the number of feet traveled in one mile (5,280) by your circumference (7.85) so you now get your final answer 672. The tire will rotate 672 times per mile.
Hope this helps!

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21. Thanksss

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22. i like how some people come here and say stop cheating but what are they doing here

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23. XD ppl if where cheating the what are you doing here? to tell us not to cheat?
I like your warnings bec they're funny, but chill if you dont want us to cheat rat us out fr.

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24. Fr just tell on us like you just gonna say “ Miss teacher ur grandma was cheating on an online website when we can’t use google.” Like shut up I come here to check my work not too cheat so pipe down

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25. I'm still very confused, does anyone know how to explain it more idk

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26. i agree

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27. can some one just explain

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28. A- The circumference of the tire is about 7.85 feet

B- The tire will rotate about 672 times to travel 1 mile

Step-by-step explanation:

The formula of the circumference of a circle is C = π d, where d is the diameter of the circle
If a circle rotates for n turns and make a distance S, then n =
∵ The diameter of a tire is 2.5 ft

∴ d = 2.5 ft

∵ C = π d, where C is the circumference of tire

∴ C = π(2.5) = 7.85398 ft

∴ C ≅ 7.85 feet

A- The circumference of the tire is about 7.85 feet

∵ The tire have to travel 1 mile

∵ 1 mile = 5280 feet

∴ S = 5280 feet

- To find the number of rotation of the tire divide S by C

∵ n =

∴ n = ≅ 672 revolution

B- The tire will rotate about 672 times to travel 1 mile

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29. thanks, this really helped me understand how to do the problem

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30. what does the s stand for?

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31. The distance, maybe? Or how many times the tire will rotate.

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32. @Papyrus NYEH HEH HEH!?!?

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34. u guys frustrate me, I'm not helping, as many people here who did, already, really? you still don't get it? you know, i don't think you don't understand but its the fact that you guys are being very lazy not reading, and not typing your own answers, you guys want straight answers which are given some are just to lazy to use there brain and read and try to understand you just take one look at the paragraph with the answer and say " still don't get it "that should be embarrassing" but its not because you real name is not shown. People who take there time trying to help is just wasting there time but is very much appreciated by some. ALL I'M SAYING IS PLS PUT YOUR OWN EFFORT IN SOMETIMES.

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35. @Angela you are right about people not using there brain but nobody cares about ya speech, some of these people just want the answers so can pass this class.

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