4. Hallar la longitud de un arco circular. (

= 3,14).
a. Si el ángulo central mide "rad en una circunferencia cuyo radio mide 1.5 km
b. Si el ángulo central mide 62 en una circunferencia cuyo radio mide 9 cm​

the equivalent expression are always the hardest ones but you look at the gcf also

step-by-step explanation:

b

step-by-step explanation:

it have 5 sides and 5 identicle angle.the rest does not have the same property as b.

brainliest

arc length = radius * x ( in radians)

6 * pi = 18 * x

divide by 18 on each side

6 pi / 18 = x

pi/3 = x

the angle is pi / 3 radians

or   60 degrees