Concentric circles 4

One circle has a radius of 98 cm, and a second concentric circle has a 1m 26 cm radius. How much longer is the circumference of the second circle than that of the first?

Correct answer:

x =  175.9 cm

Step-by-step explanation:

r1=98 cm r2=100+26=126 cm  o1=2π r1=2 3.1416 98615.7522 cm o2=2π r2=2 3.1416 126791.6813 cm  x=o2o1=791.6813615.7522=175.9 cm

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