What is the area of a circle with a radius of 3 meters? Use twenty- two sevenths for pi.
seven and one-seventh square meters
eighteen and six-sevenths square meters
twenty-eight and two-sevenths square meters
thirty-seven and five-sevenths square meters
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OpenStudy (austinl):
\(\large{\bf A=\pi r^2}\)
Can you take it from there?
OpenStudy (anonymous):
no i kinda suck at math
OpenStudy (austinl):
Okay, we have these as our givens.
\(\large{\bf r=3m}\)
\(\large{\bf \pi=\frac{22}{7}}\)
Now you just need to plug those into the equation. If you need more help, just let me know.
OpenStudy (anonymous):
need more
OpenStudy (anonymous):
help
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OpenStudy (calculusxy):
r^2*pi
3^2*22/7
9*22/7
Hope you can take it from there. Just multiply.
OpenStudy (anonymous):
i suck at fractions
OpenStudy (austinl):
Okay, you just need to plug those into the equation given earlier :)
\(\Large{\bf A=\pi r^2\\
A=\frac{22}{7}\times(3)^2\\
A=\frac{22}{7}\times9\\
A=\frac{22}{7}\times\frac{9}{1}\\
A=\frac{22\times9}{7}}\)
What does that come out to?
OpenStudy (calculusxy):
Multiply 22*9. Divide the product by 7.
OpenStudy (anonymous):
ok
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OpenStudy (anonymous):
nope didnt work
OpenStudy (calculusxy):
What is 22*9?
OpenStudy (anonymous):
198
OpenStudy (calculusxy):
Divide it by 7.
OpenStudy (anonymous):
28
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OpenStudy (calculusxy):
What was the remainder?
OpenStudy (anonymous):
the wat?
OpenStudy (calculusxy):
Or easily , what option has twenty eight in it?
OpenStudy (anonymous):
C.
OpenStudy (calculusxy):
That's your answer :)
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