-Diametre d'una circumferència: the diameter is the line segment passing through the center and joins two opposite points of a circle.
-Perímetre d'una circumferència: In geometry, the perimeter is the sum of the lengths of the sides of a geometric figure.
-Distancia recorreguda: is the measure of what an object or person moves.
-Rotacions realitzades: the small wheel rotated once and fourth times. The big wheel
rotated 1 time.
.2
a) 400 cm.
b) 5, 25 cm.
c)50 cm.
