SAT Mc Graw Hill 2011

1. Two circles, Aand B,lie in the same plane. If
   the center of circle Blies on circle A,then in
   how many points could circle Aand circle B
   intersect?
   I. 0
   II. 1
   III. 2
   (A) I only
   (B) III only
   (C) I and III only
   (D) II and III only
   (E) I, II, and III


2. What is the area, in square centimeters, of acircle
   with a circumference of 16πcentimeters?

(A) 8π

(B) 16π

(C) 32π

(D) 64π

(E) 256π

3. Point Blies 10 units from point A,which is the
   center of the circle of radius 6. If a tangent line
   is drawn from Bto the circle, what is the dis-
   tance from Bto the point of tangency?

Note:Figure not drawn to scale.

4. In the figure above, AB

–––

and AD

–––

are tangents

to circle C.What is the value of m?

Note:Figure not drawn to scale.

5. In the figure above, circle Aintersects circle B
   in exactly one point, is tangent to both cir-
   cles, circle Ahas a radius of 2, and circle Bhas
   a radius of 8. What is the length of CD

–––

?

CD

sruu

C

A B

D

A C

D

B

m° 3 m°

SAT Practice 8: Circles

....

1 2 3 4 5 7 8 9

6

1

0 2 3 4 5 7 8 9

6

1

0 2 3 4 5 7 8 9

6

1

0 2 3 4 5 7 8 9

6

....

1 2 3 4 5 7 8 9

6

1

0 2 3 4 5 7 8 9

6

1

0 2 3 4 5 7 8 9

6

1

0 2 3 4 5 7 8 9

6

....

1 2 3 4 5 7 8 9

6

1

0 2 3 4 5 7 8 9

6

1

0 2 3 4 5 7 8 9

6

1

0 2 3 4 5 7 8 9

6

402 McGRAW-HILL’S SAT