Answer:
9cm
8 cm
Step-by-step explanation:
The diameter is 2 times the radius
d = 2r
d = 2(4.5)
d = 9 cm
The diameter is 16cm
16 = 2r
Divide each side by 2
16/2 = 2r/2
8 =r
The radius is 8 cm
1st : to find the diameter just multiply the radius of the circle by 2
2nd: divide the diameter by 2 for the circle so the radius of the circle is 8
