consider circle c with angle acb measuring $\frac{3pi}{4}$ radians. if minor arc ab measures $9pi$ inches…

consider circle c with angle acb measuring $\frac{3pi}{4}$ radians. if minor arc ab measures $9pi$ inches, what is the length of the radius of circle c? if necessary, round your answer to the nearest inch. 6 inches 12 inches 18 inches 24 inches

consider circle c with angle acb measuring $\frac{3pi}{4}$ radians. if minor arc ab measures $9pi$ inches, what is the length of the radius of circle c? if necessary, round your answer to the nearest inch. 6 inches 12 inches 18 inches 24 inches

Answer

Explanation:

Step1: Recuerda la fórmula del arco.

La fórmula para la longitud de un arco $s$ en un círculo de radio $r$ con un ángulo central $\theta$ (en radianes) es $s = r\theta$.

Step2: Sustituye los valores dados.

Tenemos $s = 9\pi$ e $\theta=\frac{3\pi}{4}$. Sustituyendo en la fórmula $9\pi=r\times\frac{3\pi}{4}$.

Step3: Resuelve para $r$.

Multiplicamos ambos lados de la ecuación por $\frac{4}{3\pi}$: $r=\frac{9\pi\times4}{3\pi}$. Simplificando, $\frac{9\pi\times4}{3\pi}=\frac{9\times4}{3}= 12$.

Answer:

12 inches