Complete the table :-
Radius Diameter
Circumfer
122 0
21cm
42cm
63 cm
616
Answers
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Step-by-step explanation:
(1) Diameter of the circle is 3.5 cm.
Circumference of a circle = 2πr
Or circumference = πd
Circumference = π × 3.5 cm
= 227×3.5 = 22×0.5 (Taking π=227)
= 11 cm
∴ Circumference of the circle is 11 cm.
(2) Diameter of the circle is 6.3 m.
Circumference = πd
Circumference = π × 6.3 m
=227×6.3 = 22×0.9 (Taking π=227)
= 19.8 m
∴ Circumference of the circle is 19.8 m .
(3) Diameter of the circle is 0.14 m.
Circumference = πd
Circumference = π × 0.14 m
= 227×0.14 = 22×0.02 (Taking π=227)
= 0.44 m
∴ Circumference of the circle is 0.44 m.
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