Question

Find the circumference of circle whose diameter is-
(i) 17.5 cm
(ii) 5.6 cm
(iii) 4.9 cm
Note: take π =22/7 in the above two questions,
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Answer 1

Answer:

circumference of circle= 2πr

I. r=17.5/2

circumference of circle=2πr = 2×22/7×17.5/2= 55 cm

ii. r= 5.6/2

circumference of circle= 2×22/7×5.6/2 = 17.6 cm

iii. r= 4.9/2

circumference of circle= 2×22/7×4.9/2= 14.4 cm

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