Question

the circumference of a circle is given by the formula c = 2πr. find r if the circumference is 18.84 meters and π is 3.14. the radius, r, is meters.

Explanation:

Step1: Rearrange the formula for r

Given $C = 2\pi r$, we can solve for $r$ by dividing both sides of the equation by $2\pi$. So $r=\frac{C}{2\pi}$.

Step2: Substitute the given values

We know that $C = 18.84$ meters and $\pi=3.14$. Substitute these values into the formula for $r$: $r=\frac{18.84}{2\times3.14}$.

Step3: Calculate the value of r

First, calculate the denominator $2\times3.14 = 6.28$. Then, $\frac{18.84}{6.28}=3$.

Answer:

3