Question

A trundle wheel is to have a circumference of 1 m what must be its diameter

Answer 1

0.32...
1 divided by pi...

Answer 2

We know, Circumference = π * Diameter
1 = π * d
d = 1 / π
d = 100 / 3.14 cm   [ 1 m = 100 cm ]
d = 31.85 cm

In short, Your Answer would be 31.85 cm

Hope this helps!