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Mathematics 6 Online
OpenStudy (anonymous):

semi circle helpp??please help !

OpenStudy (anonymous):

http://gyazo.com/ec229e247f28a2185c3537b146956451

OpenStudy (anonymous):

whats the formula for area of a circle?

OpenStudy (anonymous):

PIE R ^2

OpenStudy (anonymous):

correct

OpenStudy (anonymous):

Exactly

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

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

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

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.

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!

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

OpenStudy (anonymous):

alright thank you guys

OpenStudy (anonymous):

yw

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