Hi,
None of the above is the answer.
Hope this helps.
r3t40
There is no way I can answer this without the graph
It helps you because it's the same fact family
Answer:
The circumference is 66cm
Radius = Diameter/2
= 21/2 CM
= 10.5 CM
Circumference of a circle = 2πr
= 2 × 22/7 × 10.5 CM