Find the area of the circle. Use 3.14 or 
for ? as indicated.Use 3.14 for ?.
A. 18.84785 yd2
B. 30.772 yd2
C. 15.386 yd2
D. 75.3914 yd2
Answer: A
Mathematics
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Solve the problem.Find the center of mass of the first-octant portion of a solid ball of radius 4 centered at the origin.
A. (
, 
, 
) = 
B. (
, 
, 
) = 
C. (
, 
, 
) = 
D. (
, 
, 
) = 
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Find the distance d(P1, P2) between the points P1 and P2.P1 = (-1, -7); P2 = (1, -3)
A. 12
B. 2
C. 2
D. 12
Mathematics
Complete the sentence so the result is an identity. Let x be any real number.cos x = (cot x)( )
A. sec x B. sin x C. csc x D. tan x
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Solve the problem.Tote boards at race tracks list the odds that a horse will lose the race. If the probability of a horse winning the race is 
, then what are the odds listed on the tote board?
A. 11 to 1 B. 9 to 1 C. 10 to 1 D. 1 to 10
Mathematics