Ex 9.2, 17 - Chapter 9 Class 7 Perimeter and Area

Last updated at Dec. 16, 2024 by

Ex 9.2, 17 - The minute hand of a circular clock is 15 cm long. How - Ex 9.2

part 2 - Ex 9.2, 17 - Ex 9.2 - Serial order wise - Chapter 9 Class 7 Perimeter and Area

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Ex 9.2, 17 The minute hand of a circular clock is 15 cm long. How far does the tip of the minute hand move in 1 hour. (Take π = 3.14) Here, Distance moved by minute hand in 1 hour = Circumference of circle made by minute hand Radius = r = 15 cm Circumference = 2𝜋r = 2 × 3.14 × 15 = 3.14 × 2 × 15 = 𝟑𝟏𝟒/𝟏𝟎𝟎 × 30 = 314/10 × 3 = 942/10 = 94.2 cm ∴ Minute hand moves 94.2 cm in one hour

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Davneet Singh has done his B.Tech from Indian Institute of Technology, Kanpur. He has been teaching from the past 14 years. He provides courses for Maths, Science and Computer Science at Teachoo