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Lesson 6: Calculating the Area of a Circle



 1. 

What is the area of a circle with a radius of 3 m?

r = 3 m
a.
28m2
b.
32 m2
c.
61 m2
d.
15 m2
 

 2. 

What is the area of a circle with a radius of 2.7 m?
a.
14.5 m2
b.
34.6 m2
c.
22.9 m2
d.
67.3 m2
 

 3. 

What is the area of a circle with a radius of 10.4 mm2?
a.
213.8 mm2
b.
67.9 mm2
c.
339.8 mm2
d.
12.5 mm2
 

 4. 

What is the area of a circle with a radius of 9.9 mm?
a.
307.9 mm2
b.
420.9 mm2
c.
67.3 mm2
d.
13.4 mm2
 

 5. 

What is the area of a circle with a diameter of 12.4 cm?
a.
45.4 cm2
b.
32.1 cm2
c.
120.8 cm2
d.
986.4 cm2
 

 6. 

What is the area of a circle with a diameter of 75.3 cm?
a.
754.3 m2
b.
123.7 m2
c.
4453.3 m2
d.
198.6 m2
 

 7. 

What is the area of a circle with a diameter of 76.4 mm?
a.
4584.3 mm2
b.
5643.1 mm2
c.
18.7 mm2
d.
5647.9 mm2
 

 8. 

What is the radius of a circle if the area is 30 604.42 mm2?
a.
12.50 mm
b.
34.50 mm
c.
65.70 mm
d.
98.70 mm
 

 9. 

What is the radius of a circle if the area is 17.35 m2?
a.
5.6 m
b.
2.35 m
c.
2.3 m
d.
1.2 m
 

 10. 

What is the radius of a circle if the area is 214.86 m2?
a.
3.45 m
b.
7.22 m
c.
8.27 m
d.
9.57 m
 



 
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