one circle has a radius of 98 cm and the second concentric circle has a radius of 1m 26 cm , how much longer is the circumference of the second circle than the other
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circumference of first circle=2πr
=2*22/7*98=616
circumference of second circle=2πr
=2*22/7*126=792
792-616=176
therefore its circumference is 176cm longer than the other
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Concentric circles: Two or more circles which have the same center point.
Circumference of inner circle= 2πr
=2*22/7*98= 616cm
Circumference of outer circle=2πR
=2*22/7*126= 792cm
Difference in the length of the circumference= 792-616= 176cm
Ans:176cm
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