Which of the following is not true??
?
A. ?The circumference of a circle is approximately 6.3 times the length of the radius.
B. ?The circumference of a circle is approximately 6.3 times the length of the diameter.
C. The circumference divided by equals the diameter.?
D. ?The circumference of a circle is approximately 3.14 times the length of the diameter.
E. ?The radius is the distance from a point on the circle to the center of the circle.
Answer: B
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= 
+ 
A. x = 3
B. x = - 
C. x = -3
D. x = 
Provide an appropriate response.Multiply two fractions by 
the numerators and 
the denominators.
A. multiplying; canceling B. adding; multiplying C. multiplying; multiplying D. multiplying; adding
If A denotes the area of the sector of a circle of radius r formed by the central angle ?, find the missing quantity. If necessary, round the answer to two decimal places.? = 
radians, A = 84 square meters, r = ?
A. 32.97 m B. 131.88 m C. 14.63 m D. 5.74 m
Solve.A race is 13 kilometers long. How many meters long is the race?
A. 1.3 m B. 130 m C. 1300 m D. 13,000 m