Question

The circumference (C) of a circle is 16 cm. Which formula can you use to find the diameter (d) if you know that C = πd?

Answer 1

The circumference (C) of a circle is 16 cm.

Circumference C = $\pi *d$

The approximate value of $\pi$ is 3.14

Given C = 16

We plug in 16 for C and 3.14 for $\pi$ in the formula C = $\pi *d$ . then solve for d

C = $\pi *d$

16 = 3.14 * d

'd' is multiplied with 3.14. To get 'd' alone we divide by 3.14 from both sides

$\frac{16}{3.14} = \frac{\pi*d}{3.14}$

5.09554 = d

So diameter of the circle = 5.1 cm

Answer 2

Okay i'm confused on the question but i do know the answer of the diameter
 if that help the diameter would be d=5.09cm
i hope this helps