Question

74 POINTS!!! Please help me!!

Answer 1

$\dfrac{\frac{5\pi}{12}}{2\pi}=\dfrac{5}{24}$

$\text{therefore the arc is equal} \dfrac{5}{24}\ \text{of circumference of a circle}.$

$\text{The formula of a circumference of a circle:}\ C=2\pi r$

$\text{substitute}\\\\\dfrac{5}{24}\cdot2\pi r=4\\\\\dfrac{5}{12}\cdot3.14r=4\\\\\dfrac{15.7}{12}r=4\ \ \ \ |cdot\dfrac{12}{15.7}\\\\r\approx3.1\ in$

$Answer:\ 3.1\ in$

Answer 2

Answer:

3.1 inches

is the answer.