Question

The linear speed of the seconds hand of
a wall is 1 cm/s. The length of the
seconds hand is rearly -​

Answer 1

Answer:

take it easy bro

Explanation:

the second hand runs 60 times a minute

.: total covered distance = 60×1cm = 60 cm

since , circumference of circle made by second hand = total covered distance..

since , circumference=2πr

.: 60 = 2×22/7×r

→ 60 = 44/7r

.:r = 60×7/44 cm

r = 420/44 cm

r = 105/11 cm

.: length of second hand =105/11

in decimal 9.5 approx

......hope you understand.......