Formula for the circumference of a circle:
C = 2πr (C = circumference π(pi) = 3.14..... r = radius)
You know:
r = 9 cm
π = 3.14 So substitute/plug it into the equation
C = 2πr
C = 2(3.14)(9)
C = 56.52 cm
Step-by-step explanation:
= 55 - 2x is the answer .
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Answer:
Im going to guess k is the unknown
Step-by-step explanation:
7k-14=42
42+14=7k
56=7k
56/7=k
k=8
Hello!
The formula for the area of a circle is:
A = 
x r²
Answer:
y=-x+3
Step-by-step explanation:
rise/run
-1/1
-1
