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OpenStudy (anonymous):
Which circles have an area of 16πin2?
Choose all answers that are correct.
A.
a circle with a radius of 2 in.
B.
a circle with a radius of 4 in.
C.
a circle with a diameter of 8 in.
D.
a circle with a diameter of 16 in
OpenStudy (anonymous):
I think B and C
OpenStudy (agent0smith):
Why do you think B and C? Show some work so we know if you've done it correctly.
OpenStudy (anonymous):
B. 4x4 or 4 squared is equal to 16
OpenStudy (anonymous):
Is D one because 4*4=16 and the equation is 16πin squared
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OpenStudy (anonymous):
hello?
OpenStudy (anonymous):
hi
OpenStudy (anonymous):
plz help
OpenStudy (agent0smith):
You're correct on B.
OpenStudy (anonymous):
k, is b or c one?
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OpenStudy (agent0smith):
What is the area for a circle?
OpenStudy (anonymous):
yes indeed i would say b,and c
OpenStudy (anonymous):
what about D?
OpenStudy (anonymous):
let me work out d
OpenStudy (anonymous):
yes indded it would be d to
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OpenStudy (anonymous):
A=πr squared
OpenStudy (agent0smith):
Yes, so you know B is true.
What about C?
OpenStudy (anonymous):
that could be it to
OpenStudy (anonymous):
C= 8÷2=4 and 4*4=16
OpenStudy (agent0smith):
Stop guessing @CoDe-Of-CoNdUcT
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OpenStudy (agent0smith):
Right, so you know C is true.
What about D?
OpenStudy (anonymous):
im not it b and c
OpenStudy (anonymous):
or c and d
OpenStudy (anonymous):
D=16 so its not one of the answers
OpenStudy (anonymous):
ok so yea b and c
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OpenStudy (agent0smith):
Why is D not one? Show the work
OpenStudy (anonymous):
so B and C are the correct answers?
OpenStudy (anonymous):
yes
OpenStudy (anonymous):
thanks I'll medal agent0smith and I wil Fan Code-of-conduct
OpenStudy (anonymous):
please meddle and fan ^_^
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OpenStudy (agent0smith):
D is not one because the radius would be 8, and 8^2 = 64.
So yes B and C