Respuesta :
Answer:
Presuming the 4.2 cm is the radius the diameter would be 8.4 cm
Step-by-step explanation:
Radius is half the diameter
So it would be 4.2 X 2 for the diameter
Correct me if I'm wrong
Answer:
Diameter is twice the radius, therefore 4.2cm radius = 8.4cm diameter.
Step-by-step explanation: