1.25 inches convert to feet

Wheels are 1.25 inches in diameter.

fastest speed is 3ft/sec.

maximum distance to travel is 16 x (18 cm)

1. convert the dimensions for the wheel and maximum distance to feet.

wheel diameter in feet: = 1.25/12 ft

maximum distance in feet: 16*18 = 288 cm

max d = 288 / (2.54*12) = 24/2.54 ft