Question

The minute hand of a clock is 9cm and that of hour hand is 7cm.If they run for 3days, how much distance covered by the both the hands?​

Answer 1

Answer:

Minute hand covers 4071.50cm while hour hand covers 264cm

Step-by-step explanation:

Minute hand rotates 24 times in 1 day

so in 1 day it will cover 24×2πr

in 3 day = 3×24×2π9 (r=9cm)

≈ 4071.50cm(approx)

Hour hand rotates 2 times a day

therefore 6 times in 3 day

it covers 6×2πr cm

= 12×π×7. (r=7cm)

= 264cm