Question

the length of minute hand is 21 cm find the distance covered by the minute hand in one hour​

Answer 1

Step-by-step explanation:

The length of the minute hand is 21 cm.

Distance covered by it in one hour = circumference of a circle with radius 21 cm.

Circumference of Circle= 2 * pi * r

Taking pi as 22/7, we get,

Circumference= (2 * 22/7) * 21 cm

= 2 * 22 * 3 cm

= 132 cm

Therefore, The distance covered by the minute hand in one hour in 132 cm.

Hope this helps!

Answer 2

Answer:

$Heya!! \: here's \: ur \: answer$

We know,

Circumference of circle = π × diameter

Diameter = 2× radius

Minute hand is the radius

Radius = 21 cm

21 × 2 = 42 cm

Diameter = 42cm

Circumference = π ×42 cm

=> 131.5 cm

Therefore, the distance covered by one minute hand in 1 hour is 131.5 cm

HOPE IT HELPS U