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WorkShop Calculation and Science
AREA OF SURFACES
Set 4
Set 4
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Q12641
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What is the diameter of the circle, if the area of the circle is 78.5cm<sup>2</sup>?
A
5 cm
B
10 cm
C
15 cm
D
5.5 cm
Q12642
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What is the area of the circle if the radius is 10 cm?
A
314 cm<sup>2</sup>
B
31.4 cm<sup>2</sup>
C
30.4 cm<sup>2</sup>
D
3.14 cm<sup>2</sup>
Q12643
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What is the radius of the semicircle, if the circumference of the semicircle is 28.26 cm?
A
5.49 cm
B
6.49 cm
C
8.5 cm
D
8.75 cm
Q12644
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What is the diameter of the semicircle, if the circumference of the semicircle is 21.98 cm?
A
8.55 cm
B
8 cm
C
7.55 cm
D
7 cm
Q12645
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What is the area of the semicircle, if the diameter is 14 cm?
A
70 cm<sup>2</sup>
B
76.93 cm<sup>2</sup>
C
75.06 cm<sup>2</sup>
D
86.93 cm<sup>2</sup>
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