MENU
Question -

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



Answer -

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 5minutes = 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

Comment(S)

Show all Coment

Leave a Comment

Free - Previous Years Question Papers
Any questions? Ask us!
×