1.

Find the circumference of a circle whose radius is 1.4 m.

Answer»

1.4 m

Here, radius r = 1.4 m = (14/10) m

Circumference of a circle = (2πr) units

Where, π = (22/7)

= 2 × (22/7) × (14/10)

= 1 × 22 × (2/5)

= 8.8 m



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