Question

The radius of a circle is 10. Using π, which equation expresses the ratio of the circumference of the circle to the circle's diameter?

Answer 1

Answer:

$\frac{circumference\ }{diameter}=\pi$

Step-by-step explanation:

Given that radius of the circle = 10

Using π, we need to find about which equation expresses the ratio of the circumference of the circle to the circle's diameter.

diameter of the circle = 2(radius) = 2(10)=20

circumference of the circle = 2 π r = 2 π (10)  = 20 π

then ratio of the circumference of the circle to the circle's diameter is given by: $\frac{circumference\ }{diameter}=\frac{20\pi}{20}=\pi$.

Hence required equation is $\frac{circumference\ }{diameter}=\pi$