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Answer :

Solimego
Circumference = pi x diameter

Pi = 3.142


Answer for Q1 = 18.852

6 x 3.142 = 18.852


Answer for Q4 = 25.136

As it gives the radius, you gotta double the radius to get the diameter of the circle

8 x 3.142 = 25.136


Hope this helps :]

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