Circles I - Ambitious

Question 1: Calculate the area of a circle if its circumference is

113.1 c m

A

1017.9 c m^{2}

B

706.9 c m^{2}

C

468.2 c m^{2}

D

355.3 c m^{2}

Question 2: Calculate the radius of a circle if its area is

78.54 c m {}^{2}

A

4 c m

B

6 c m

C

7 c m

D

5 c m

Question 3: Find the area of a sector:

A

907.92 c m^{2}

B

302.64 c m^{2}

C

187.61 c m^{2}

D

453.96 c m^{2}

Question 4: Calculate the angle

α

if the sector area is

32.72 c m^{2}

A

150^{\circ}

B

125^{\circ}

C

170^{\circ}

D

140^{\circ}

Question 5: Calculate the area of a circle:

A

50.3 c m^{2}

B

143.4 c m^{2}

C

100.5 c m^{2}

D

226.2 c m^{2}

Question 6: Calculate the area of a square if the area of a circle is:

64 π c m^{2}

:

A

128 c m^{2}

B

116 c m^{2}

C

64 c m^{2}

D

112 c m^{2}

Question 7: Calculate the radius length of the circle:

A

15 c m

B

13 c m

C

6.5 c m

D

12 c m

Question 8: Calculate the area of the shaded region:

A

12.2 c m^{2}

B

6.5 c m^{2}

C

7.7 c m^{2}

D

11.1 c m^{2}

Question 9: Calculate the area of the shaded figure:

A

7.41 c m^{2}

B

12.21 c m^{2}

C

15.71 c m^{2}

D

13.25 c m^{2}

Question 10: Calculate the area of the shaded region:

A

15.25 c m^{2}

B

12.7 c m^{2}

C

13.66 c m^{2}

D

14 c m^{2}

Test: Circles I - Ambitious

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