Question

A trundle wheel is to have a circumference of 1 metre. What must be its diameter, to the nearest millimeter

Answer 1

You now know how to do this

C= pi *D

Answer 2

but how do you do it the other way around?

Answer 3

i got stuck on how to do it back wards

Answer 4

if oyu have an equation A=B*C and you want toknow what C is

Divide both sides by B

\[\frac{ A }{ B }=\frac{ BC }{ B } =C\]

Answer 5

In this case - divide both sides by pi

Answer 6

so pi÷1m?
then what is the other side?

Answer 7

D*pi = C

DIVIDE both sides by pi

Answer 8

oo

Answer 9

i get it!

Answer 10

Well done - post your answer...

Answer 11

(the question states "to the nearest mm")

Answer 12

im not sure but is it 318mm?

Answer 13

yes - well done

(1000mm/pi)

Answer 14

thanks so much again!! :D