The length of a minute hand of a wall-clock is 10.5 cm. Find the dista

1.	The length of a minute hand of a wall-clock is 10.5 cm. Find the distance coveredby tip of minute hand in 2 hours.
Answer» Answer: 131.88 cm is the required answer. Step-by-step explanation: Length of Minute Hand of a wall-clock = Radius of Clock = 10.5 cm ( as we consider the clock in circular shape). To Find:- Distance covered by minutes hand in 2 HOUR. Solution:- If the minute hand takes 1 hour to complete one round .So , the number of rounds covered by minutes hand is 2 As we have to calculate the TOTAL distance covered by the minute hand so we calculate the circumference or PERIMETER of the clock . •Circumference of clock = 2πr where, π = 3.14 r denote length of minute hand Substitute the VALUE we get → Total distance covered by minute hand = 2 × 2 πr → Total distance covered by minute hand = 2× 2 × 3.14 × 10.5 → Total distance covered by minute hand = 4 × 3.14 × 10.5 → Total distance covered by minute hand = 131. 88 cm Hence, the total distance covered by the minute hand is 131.88 cm .

The length of a minute hand of a wall-clock is 10.5 cm. Find the distance coveredby tip of minute hand in 2 hours.

Answer»

Answer:

Step-by-step explanation:

Length of Minute Hand of a wall-clock = Radius of Clock = 10.5 cm ( as we consider the clock in circular shape).

To Find:-

Solution:-

If the minute hand takes 1 hour to complete one round .So , the number of rounds covered by minutes hand is 2

As we have to calculate the TOTAL distance covered by the minute hand so we calculate the circumference or PERIMETER of the clock .

where,

Substitute the VALUE we get

→ Total distance covered by minute hand = 2 × 2 πr

→ Total distance covered by minute hand = 2× 2 × 3.14 × 10.5

→ Total distance covered by minute hand = 4 × 3.14 × 10.5

→ Total distance covered by minute hand = 131. 88 cm

Hence, the total distance covered by the minute hand is 131.88 cm .