Mathematics
6 Online
OpenStudy (anonymous):
semi circle helpp??please help !
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OpenStudy (anonymous):
whats the formula for area of a circle?
OpenStudy (anonymous):
PIE R ^2
OpenStudy (anonymous):
correct
OpenStudy (anonymous):
Exactly
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OpenStudy (anonymous):
if you divide that by 2 that will give you the area of a half of a circle
OpenStudy (anonymous):
3.14 • 6^2 / 2
OpenStudy (anonymous):
56.52?
OpenStudy (anonymous):
yes
OpenStudy (anonymous):
Then what
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OpenStudy (anonymous):
find area of rectangle, and subtract the area you just found from it
OpenStudy (anonymous):
area of a rectangle is w*l
OpenStudy (anonymous):
Which would be 6 • (6 • 2)
OpenStudy (anonymous):
72-56.52?
OpenStudy (anonymous):
Yes
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OpenStudy (anonymous):
answer=15.42??
OpenStudy (anonymous):
you need to find the length of the rectangle, it will be equal to the diameter of the circle
OpenStudy (anonymous):
wait im confused
OpenStudy (anonymous):
@billj5 what is the diameter of the circle
OpenStudy (anonymous):
it is 2 times the radius
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OpenStudy (anonymous):
It is 12 my bad
OpenStudy (anonymous):
so how should i write that out to multiply it?
OpenStudy (anonymous):
Which is what I actually said I thought I said 6 *6
OpenStudy (anonymous):
6 x 12
OpenStudy (anonymous):
its still 72.
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OpenStudy (anonymous):
that is what you said but i was trying to explain it
OpenStudy (anonymous):
so is my answer right then
OpenStudy (anonymous):
15.48??
OpenStudy (anonymous):
looks good
OpenStudy (anonymous):
thanks!
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OpenStudy (anonymous):
Yes
OpenStudy (anonymous):
is it squared//
OpenStudy (anonymous):
No
OpenStudy (anonymous):
Uh actually yeah bc it is area
OpenStudy (anonymous):
the units are squared
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OpenStudy (anonymous):
alright thank you guys
OpenStudy (anonymous):
yw