Question

The hour hand of a clock is 6.3 cm long. Find the distance covered by it in 2 days. ​

Answer 1

Answer:

The distance covered by an hour hand in 2 days is 158.4 cm.

Step-by-step explanation:

Hey Mate,

1 Day = 24 hrs

2 days = 2×24 = 48 hours

To cover one round of clock by an hour hand, time taken = 12 hours

1 Day = 2 Rounds (12 hrs each)

2 Days = 4 Rounds.

So,

In 48 hours an hour hand will take 4 round of clock.

Length of an hour hand = 6.3 cm

This hour hand will act as radius of circle.

So,

Distance covered in one round = circumference of circle

= 2πr = 2 × 3.14 × 6.3 = 39.6 cm

So, Distance covered in 2 Days = 39.6 × 4 = 158.4 cm

The distance covered by an hour hand in 2 days is 158.4 cm.

Answer 2

Answer:

$4 \times 2\pi \: r$

Where r =radius = 6.3 cm

4 × 2 × 3.14 × 6.3 cm

= 158.256 cm