Question

The minute hand of a watch is 1.5cm long. How far does its tip movein 40 minutes?​

Answer 1

Answer:

that's your answer. Answer: The length of the minute hand is 6.28 cm

Answer 2

The length of the minute hand is 6.28 cm.

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 40 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

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 =

Degree complete in 40 minute =

Degree complete in 40 minute = 240°

In radian measure,

Substitute the value in the formula,

Therefore, The length of the minute hand is 6.28 cm.