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12.Practice.Tests.for.the.SAT_2015-2016_1128p

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Section 3 1<br />

Practice Test Six<br />

517<br />

G<br />

18. In <strong>the</strong> diagram above, <strong>the</strong> diameter of circle 0 is 6.<br />

If <strong>the</strong> circle is cut in half, what is <strong>the</strong> total perimeter<br />

of <strong>the</strong> two pieces?<br />

(A) 37t+3<br />

(B) 67t + 6<br />

(C) 67t + 12<br />

(D) 127t + 6<br />

(E) 127t + 12<br />

y<br />

(0, k)<br />

(3, 2)<br />

20. In <strong>the</strong> figure above, <strong>the</strong> slope ofline l is - - 1 -.<br />

' 2<br />

What is <strong>the</strong> value of k?<br />

(A) -6<br />

(B)<br />

(C)<br />

1<br />

2<br />

7<br />

2<br />

(D) 5<br />

(E) 8<br />

19. The diagram above shows three circles, all of<br />

which share a common origin 0. If <strong>the</strong> lengths<br />

of segments AB and BC are both equal to <strong>the</strong><br />

diameter of <strong>the</strong> smallest circle, what is <strong>the</strong><br />

probability that a randomly selected point within<br />

<strong>the</strong> diagram will fall within <strong>the</strong> shaded region?<br />

(A)<br />

(B)<br />

(C)<br />

(D)<br />

(E)<br />

8<br />

25<br />

9<br />

25<br />

9<br />

5<br />

8<br />

8<br />

9<br />

1urr:

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