Adv
Sonu
  • 0
Newbie

The length of the minute hand of a clock is 14 cm. Find the area swept by the minute hand in 5 minutes. Q.3

  • 0

Today i am solving areas related to circle of ncert class 10 of exercise 12.2 question number 3 its very hard to solve please give me the easiest and best solution of this question. The length of the minute hand of a clock is 14 cm. Find the area swept by the minute hand in 5 minutes.

Share

1 Answer

  1. Length of minute hand = radius of the clock (circle)

    ∴ Radius (r) of the circle = 14 cm (given)

    Angle swept by minute hand in 60 minutes = 360°

    So, the angle swept by the minute hand in 5 minutes = 360° × 5/60 = 30°

    We know,

    Area of a sector = (θ/360°) × πr2

    Now, area of the sector making an angle of 30° = (30°/360°) × πrcm2

    = (1/12) × π142

    = (49/3)×(22/7) cm2

    = 154/3 cm2

    • 1
Leave an answer

Leave an answer

Browse

Choose from here the video type.

Put Video ID here: https://www.youtube.com/watch?v=sdUUx5FdySs Ex: "sdUUx5FdySs".

Captcha Click on image to update the captcha.

Related Questions