Question

find the circumference of a circle whose diameter is 1)7.7. 2)19.6 and 3) 24.5

Answer 1

Circumfernce formula = 

Pi * Diameter


1)24.2
2)61.6
3) 77

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Answer 2

a)c=πd =} 22/7*7.7=}24.17
b)c=πd=}22/7*19.6=61.54
c)c=πd=}22/7*24.5=}76.93

it is right answer