Respuesta :
c=2pir
first one is r=70
c=2pi70=140pi
2nd one is 49=r
c=2pir
c=2pi49
c=98pi
ratio is
140pi:98pi=10:7
first one is r=70
c=2pi70=140pi
2nd one is 49=r
c=2pir
c=2pi49
c=98pi
ratio is
140pi:98pi=10:7