the circumference of a circle is directly propotional to its diameter . the circumference of a circle of a diameter 3.5 cm is 11cm .what is the cicumference of a circle of a diameter 4.2 cm
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circumference of circle=2πd/2
=2×22×4.2/7×2
=13.2 cm
OR
Diameter. Circumference
3.5 cm.--> 11 cm
4.2 cm -->?
Therefore
circumference= 4.2×11/3.5
= 13.2 cm
=2×22×4.2/7×2
=13.2 cm
OR
Diameter. Circumference
3.5 cm.--> 11 cm
4.2 cm -->?
Therefore
circumference= 4.2×11/3.5
= 13.2 cm
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