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Area Of Circles, Semicircles, And Quarter-circles
Test Description: Calculating the area of circles, semicircles, and quarter-circles given either the radius or the diameter.
Instructions: Answer all questions to get your test result.
1) Given a circle with radius of 1yd, what is the area of the circle? Use PI = 3.14
A
12.56 square yards
B
3.14 yards
C
6.28 square yards
D
3.14 square yards
2) The radius of a circle is 8 miles. What is the circle's area? Use PI = 3.14
A
200.96 square miles
B
25.12 square miles
C
50.24 square miles
D
803.84 square miles
3) The diameter of a circle is 12 kilometers. What is the circle's area? Use PI = 3.14
A
113.04 square kilometers
B
452.16 square kilometers
C
37.68 square kilometers
D
75.36 square kilometers
4) The diameter of a circle is 8 centimeters. What is the circle's area? Use PI = 3.14
A
50.24 square centimeters
B
200.96 square centimeters
C
12.56 square centimeters
D
25.12 square centimeters
5) The radius of a quarter circle is 1 meter. What is the quarter circle's area? Use PI = 3.14
A
0.785 square meters
B
1.57 square meters
C
12.56 square meters
D
3.14 square meters
6) The diameter of a semicircle is 30 feet. What is the semicircle's area? Use PI = 3.14
A
353.25 square feet
B
1413 square feet
C
706.5 square feet
D
176.625 square feet
7) The radius of a semicircle is 3 meters. What is the semicircle's area? Use PI = 3.14
A
28.26 square meters
B
9.42 square meters
C
14.13 square meters
D
7.065 square meters
8) The radius of a semicircle is 14 millimeters. What is the semicircle's area? Use PI = 3.14
A
307.72 square millimeters
B
76.93 square millimeters
C
615.44 square millimeters
D
153.86 square millimeters
9) The diameter of a semicircle is 18 millimeters. What is the semicircle's area? Use PI = 3.14
A
127.17 square millimeters
B
254.34 square millimeters
C
508.68 square millimeters
D
254.34 square millimeters
10) The radius of a quarter circle is 2 millimeters. What is the quarter circle's area? Use PI = 3.14
A
12.56 square millimeters
B
6.28 square millimeters
C
3.14 square millimeters
D
25.12 square millimeters
*select an answer for all questions
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