Ex 9.2

Ex 9.2, 1 (a)

Ex 9.2, 1 (b) Important

Ex 9.2, 1 (c)

Ex 9.2, 2 (a) Important

Ex 9.2, 2 (b) Important

Ex 9.2, 2 (c)

Ex 9.2, 3

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Ex 9.2, 10 Important

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Ex 9.2, 14

Ex 9.2, 15

Ex 9.2, 16 Important

Ex 9.2, 17 Important You are here

Last updated at April 16, 2024 by Teachoo

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