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Find the circumference of a circle whose radius is (i) 35cm  (ii) 4.2cm (iii) 15.4 cm

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Find the circumference of a circle whose radius is

(i) 35cm 

(ii) 4.2cm 

(iii) 15.4 cm

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1 Answer

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i) Given: r= 35 cm

Circumference of the circle = 2πr = 2 × 22/7 × 35 = 220 cms.

ii) Given : r = 4.2 cm

Circumference of the circle = 2πr = 2 × 22/7 × 4.2 26.4 cms

iii) Given: r = 15.4cm

Circumference of the circle = 2πr = 2 × 22/7 × 15.4 = 96.8 cms

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