Mathematics
18 Online
OpenStudy (anonymous):
What are the area and perimeter of the sector of the circle shown? C is the center. Use an EXACT answer with fractions
Join the QuestionCove community and study together with friends!
Sign Up
OpenStudy (anonymous):
@atreyu6s3x6
OpenStudy (anonymous):
OpenStudy (anonymous):
okay do you know the formula for a cector? area and perimeter/?
OpenStudy (anonymous):
nope
OpenStudy (anonymous):
@atreyu6s3x6
Join the QuestionCove community and study together with friends!
Sign Up
OpenStudy (anonymous):
i have to hurry on this one 2, only have a certain time limit
OpenStudy (anonymous):
\[\theta/360 *\pi*r^2\]
OpenStudy (anonymous):
and yea i have to go so lets finish...so 90/360=0.25
0.25*pi*3^2
0.25*pi*9
simplify
OpenStudy (anonymous):
that is your area
OpenStudy (anonymous):
7.065 is area? @atreyu6s3x6
Join the QuestionCove community and study together with friends!
Sign Up
OpenStudy (anonymous):
is that using the exact answer in fractions? @atreyu6s3x6
OpenStudy (anonymous):
A=7.068 without roundong
OpenStudy (anonymous):
@MyNameIsNemo can you help her?
OpenStudy (anonymous):
im sorry i have to go now............. i have class now... D: im sorry
OpenStudy (mynameisnemo):
uhm maybe possibly? .-.
Join the QuestionCove community and study together with friends!
Sign Up
OpenStudy (anonymous):
@MyNameIsNemo we found area now we need perimeter
OpenStudy (mynameisnemo):
meh okie i can try
OpenStudy (anonymous):
okay thanks @MyNameIsNemo
OpenStudy (mynameisnemo):
idk the equation for the perimeter .-.
@AlexandervonHumboldt2 might help you though, hes very smart and helpful see if you can get him
OpenStudy (anonymous):
@AlexandervonHumboldt2
Join the QuestionCove community and study together with friends!
Sign Up
OpenStudy (anonymous):
@AlexandervonHumboldt2
OpenStudy (anonymous):
we found area, now we need perimeter
OpenStudy (alexandervonhumboldt2):
for P use formula 2*pi*r*C/360=2*3.14*3*90/360=4.71
OpenStudy (alexandervonhumboldt2):
where C is central angle
OpenStudy (anonymous):
so is 4.71 my answer for perimeter? @AlexandervonHumboldt2
Join the QuestionCove community and study together with friends!
Sign Up
OpenStudy (alexandervonhumboldt2):
yeah if they mean arc length by perimeter
OpenStudy (anonymous):
yes, can you help me with one more fast question?
OpenStudy (alexandervonhumboldt2):
ok