Respuesta :

#4
If the circumference of the first circle is 24 cm, what is the diameter of this circle?  The formula for circumference applicable here is C = pi*d.

Let C = pi*d = 24 cm and solve this for the diameter, d:
       
         24 cm
d = --------------- = 7.639 cm (answer to the nearest millimeter)
          3.14159