Question

A wheel has a diameter of 16 cm.

Approximately how far does it travel in 5 revolutions?



A.
502.4 cm


B.
251.2 cm


C.
100.48 cm


D.
80 cm

Answer 1

@johnweldon1993 i think 80 what im doing : 16 x 5

Answer 2

When you travel 1 rotation...how far do you go? *hint...you travel in 1 full circle...so you cover how much distance?

Answer 3

360

Answer 4

Okay right...360 degrees...which is also equal to \(\large 2\pi\) right?

Answer 5

well when i did 2 x 3.14 it got me to 6.28

Answer 6

which is 100.48

Answer 7

divide 100.48 by 16

Answer 8

oh wait no i was wrong

Answer 9

so 100.48 x 5

Answer 10

i just realized that

Answer 11

which would be 502.4

Answer 12

which would be A

Answer 13

:D yay!

Answer 14

c/d = pi.

c = pi * d = 16 * pi.

Times 5 rotations = 16 * pi * 5 = 251.2

Answer 15

Hang on 1 second...

Answer 16

Yes >.< that is correct right there! Dumb mistake!

Answer 17

oh kk thanks again

Answer 18

Easy to make

Answer 19

Thank you @unknownunknown it must be too late for me to think!

Answer 20

Haha, don't worry I make worse all the time.