The answer to this question is 36
2 radians = 2 full rotations
pi = 3.14
circumference of wheel = 2(pi)r
= 20 * 3.14
=62.8 cm
= 0.628m
meters rolled = 0.628 * 2
=1.256 m
A ) P=6n+18 where N is the number of triangles. There's always two '9's and the 6 is based on how many triangles there are.