Question

Medal/Fan

A bicycle tire has a diameter of twenty-six inches. If a pebble is stuck in the tire's treads, about how far will the pebble travel with each rotation of the tire?

forty point eight two inches

eighty-one point six four inches

five hundred thirty point six six inches

two thousand one hundred twenty-two point six four inches

Answer 1

Im sorry i cant do math with inches but for every rotation of the wheel, the linear distance will be given by 2*pi*r, where r= radius (26 inches)

Answer 2

oh ok thanks for trying ill fan you for trying X)

Answer 3

sorry

Answer 4

its ok i dont understand it either so who am i to judge X)

Answer 5

ok here's the thing, I will draw it so you can understand, ok?

Answer 6

ok thanks XD

Answer 7

in order for the pebble to hit the ground again, the tire has to go around a full rotation. In order to find out how much area the tire covers in one rotation, we need to know the length around the OUTSIDE of the tire which is the circumference.

Answer 8

i think its the third one

Answer 9

five hundred thirty point six six inches

Answer 10

It's not the third one, it's the second one. That one decimal place is off because of my rounding. But it is 81.64 not 530.66

Answer 11

ups sorry. On my first answer i said that 26 was the radius but it wasnt. Its the diameter.
So its only pi*d = 81.68

Answer 12

oh i get it now you have to multiply the diameter by pie oh my gosh thank you i get it now X)

Answer 13

Its the answer 2 ofc :)

Answer 14

youre welcome!