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Example 12 - What is the circumference of a circle of diameter 10 cm

Example 12 - Chapter 11 Class 7 Perimeter and Area - Part 2


Transcript

Example 12 What is the circumference of a circle of diameter 10 cm (Take Ο€ = 3.14)? Diameter = 10 cm Radius = r = π·π‘–π‘Žπ‘šπ‘’π‘‘π‘’π‘Ÿ/2 = 10/2 = 5 cm Circumference = 2πœ‹r = 2 Γ— 3.14 Γ— 5 = 3.14 Γ— 2 Γ— 5 = 314/100 Γ— 10 = 314/10 = 31.4 cm ∴ Circumference of circle is 31.4 cm

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Davneet Singh is a graduate from Indian Institute of Technology, Kanpur. He has been teaching from the past 12 years. He provides courses for Maths and Science at Teachoo.