In a clock the long hand is of 8cm and the short hand is of 7cm if the clock runs

@arpit bro..there is a little mistake in ur expalanation.
ans=1648*pi..
explaination-

4(2*2*pi*7+24*2*pi*8)=1648*pi
10 years agoHelpfull: Yes(46) No(5)

4 days = 96 hours
long hand makes 1 round (i.e 2*pi*r) in 1 hour, so 96 rounds in 96 hours
short hand makes 1 round in 12 hours, so 8 rounds in 96 hours
Hence total distance = (96*2*pi*8) + (8*2*pi*7) = 1648*pi
8 years agoHelpfull: Yes(18) No(1)
4(2*pi*7+24*2*pi*8)=1592*pi
10 years agoHelpfull: Yes(10) No(18)
4days means total 8 circles
distance covered by long hand for circle is 2*pi*8
distance covered by short hand for circle is 2*pi*7
total distance=8(2*pi*8+2*pi*7)=754.28
10 years agoHelpfull: Yes(6) No(11)
why 24 comes explain???
10 years agoHelpfull: Yes(2) No(0)
is that correct answer @kamlesh kumar ??????
i think answer is 2880 pi
10 years agoHelpfull: Yes(0) No(2)
2261.76 i think.
10 years agoHelpfull: Yes(0) No(0)
Example Problem

Short Hand

One full rotation in 12 hours ⟹2πr=16π⟹2πr=16π cm traversed every 12 hours.

For one day, we have 32π32π cm, twice that of a 12 hour period.

For 3 days, we then have 3⋅32π=96π3⋅32π=96π cm traversed.

Long Hand

One full rotation in 1 hour ⟹2πr=24π⟹2πr=24π cm traversed every hour.

For one day, we have 24⋅24π=57624⋅24π=576 cm.

For 3 days, we then have 3⋅576π=1728π3⋅576π=1728π cm traversed.

Total Distance

For the total, we have 96π+1728π=1824π96π+1728π=1824π cm.
8 years agoHelpfull: Yes(0) No(0)

In a clock the long hand is of 8cm and the short hand is of 7cm. if the clock runs for 4 days find out the total distance covered by both the hands.