The radius of a circle is 9. Using π, which equation expresses the ratio of the circumference of the circle to the circle's diam
eter? A) C /9 = π B) C /18 = π C) C = 9π/r D) C = r /18π
2 answers:
The formula of the circumference is C=
Answer:
B) C÷18=π
Step-by-step explanation:
The formula of the π(pi) is :
pi(π)=Circumference(C) ÷diameter(d), where the diameter of the circle=2*radius =2*9=18
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