Respostas

2013-09-09T14:49:02-03:00
R= 154/ 2 x Pi         (R= raio, comprimento= 154)
R= 154/ 6,28
Raio= 24,5 arredondando 
2013-09-09T14:50:55-03:00
C=2 \pi r
154cm=2x3,14xr
154=6,28r
r= \frac{x}{y} =24,52cm