Question

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Answer 1

Answer:

i)....2 × 22/7 × 35 = 220 cm

ii)....2×22/7×4.2 = 22×6/5 = 26.4cm

iii).....2×22/7×15.4 = 96.79cm

Step-by-step explanation:

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Answer 2

Answer:220cm,26.4cm,96.8cm

Step-by-step explanation:we know that the circumference of a circle is 2x22/7/r(where 'r' is the radius of the circle)

(i)radius=37cm

so circumference=2x22/7x35 cm=220cm

(ii)radius=4.2cm

so circumference=2x22/7x4.2cm=26.4cm

(iii)radius=15.4cm

so circumference=2x22/7x15.4cm=96.8cm