Question

the length of the second hand of a wall clock is 7 cm find the distance covered by tip of the second hand in 10 minute 10 minute give the answer step by step

Answer 1

25200
angle made in 10 minute=360*10
¤=L/R
L=¤R=3600*7=25200

Answer 2

total seconds in 10 minutes = 60 *10= 600 seconds

now in 60 seconds. hand makes= 360°
then in 1sec angle made by hand 360/60
6°
then angle made by hand in 600 seconds
6×600=3600°

now length. = o°/360×2πr

3600/360×2×22/7×7

10×44
440cm. ans.

i hope it will help you.