Mathematics
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OpenStudy (anonymous):
The minute hand on a clock is 9.5cm long what area will this hand sweep out in:
i One hour
ii 30 Minutes
iii 4o minutes
please help i really need it
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OpenStudy (anonymous):
OK, I think I understand the question
OpenStudy (anonymous):
a clock is a circle so to find the area swept in 1 hour... pi*r^2
OpenStudy (anonymous):
plzz help i gtg in 4mins
T^T
OpenStudy (anonymous):
so in your problem, it will be pi*9.5^2
OpenStudy (anonymous):
un hun
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OpenStudy (anonymous):
for 30 minutes, it will be 1/30 and 40 minutes it is 1/40
OpenStudy (anonymous):
what do you get for the area in one hour?
OpenStudy (anonymous):
in i hr isss
OpenStudy (anonymous):
pi * 9.5^2 is approximately 283.53 cm
OpenStudy (anonymous):
can you do the others now?
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OpenStudy (anonymous):
so you would have 283.53/30*pi and 283.53/40*pi
OpenStudy (anonymous):
/ = devide by 30?
OpenStudy (anonymous):
yes
OpenStudy (anonymous):
= 9.45?
OpenStudy (anonymous):
for what one?
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OpenStudy (anonymous):
firs
t
OpenStudy (anonymous):
i get it
OpenStudy (anonymous):
thank you sooo much :D
OpenStudy (anonymous):
so on your calculator, you would put it in as (283.53/30) * pi
OpenStudy (anonymous):
yah
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OpenStudy (anonymous):
i gtg really but thank you so muvh for helping meeee
OpenStudy (anonymous):
ok, tag me if I am on and you need help again :)
OpenStudy (anonymous):
:D
OpenStudy (anonymous):
ta
OpenStudy (anonymous):
oh, and don't forget to close the question as well