Question

9. The minute-hand of a clock is 1-5 cm long. How much would this hand tum in 50
minute​

Answer 1

Answer:

Step-by-step explanation:

Given : The minute hand of a watch is 1.5 cm long.

To find : How far does its tip move in 50

minutes?

Solution :

The minute hand of a watch is 1.5 cm long.

i.r. r= 1.5 cm

We know that,

 

Where, r is the radius

l is the length of arc

teeta is the angle subtended.

Now,

Minute hand make 1 revolution in 1 hour.

i.e. Minute hand complete 360° in 1 hour.

So degree complete in 1 minute = 360/60

Degree complete in 50 minute =  360/60*50

Degree complete in 50 minute = 300