Respuesta :
Circle Area = PI * radius^2
25*PI = PI * radius^2
radius = 5
central angle = PI*4
arc length = PI*4 * 5
arc length = 20*PI = 62.8318530718
25*PI = PI * radius^2
radius = 5
central angle = PI*4
arc length = PI*4 * 5
arc length = 20*PI = 62.8318530718