Answer:
Diameter of the circle=21 cm
Radius of the circle=21/2 cm
Circumference of the circle is 2×π×(radius)
Circumference=2×22/7×21/2= <u>66 cm</u>
<u>66 cm</u> is the right answer.
21piecm
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Step-by-step explanation:
ok im not sure if this is it but 148.41315910
82
2×m²+10
m²= -6×-6=36
36×2=72+10=82
D
the square root of 24 is 4.8 so it has to be D
C=2(pi)r
C=10pi m