If n = 5 and r = 3 Find "Cr.
2 answers:
Answer:
Cr = 10
Step-by-step explanation:
To calculate combinations we use the nCr formula: nCr = n! / r! * (n - r)!, where n = number of items, and r = number of items being chosen at a time.
![C(n,r)=[?]](https://tex.z-dn.net/?f=C%28n%2Cr%29%3D%5B%3F%5D)




[RevyBreeze]
Answer:
Pi*r^2
Step-by-step explanation:
If your finding circumfrence the equation is Pi*r^2
So your equation would be 3.14*3^2
So 3^2 would be 3*3=9
Multiply 9 by 3.14
your answer would be 28.26
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