Question

The minute hand of a watch is 35 cm long How fur does move in
9 minutes
66 cm (b) 22 cm (4) 33 cm (d) none of these​

Answer 1

Answer:

Answer is option D - None of these

:-) :-)

Answer 2

Answer:

4)33cm

Step-by-step explanation:

Given: r=35cm

In 60 minutes the minute hand of a watch completes one revolution

In one minute the minute hand of a watch turns 1/60 revolution

In 9 min the minute hand of a watch turns 9/60=3/20 revolution

One complete revolution = 360 degree = 2pi radian

3/20 revolution = 3/20×2pi =66/70

I.e angle=66/70

Hence the required distance travelled is given by , l=r×angle (in radian measure)

=35×66/70

=2310/70

l=33cm.