Length of minute hand of clock = 15 cm

We have to find out that how far will the tip of minute hand move in 1 hour

For this we have to find out the distance travelled by the tip of minute hand

∴ Distance travelled by the minute hand = Circumference of the clock

We know that,

Circumference of the circle = 2πr

= 2 × 3.14 × 15

= 30 × 3.14

= 94.2 cm