Q1:

Which of the following would often be in the shape of a sphere? 
A. soccer ball B. globe C. balloon D. all of the above 
Answer 1:


Q2:

A sphere has a radius of 10 cm, what is its volume? 
A. 1240 cm^{3} B. 12400 cm^{3} C. 4133 cm^{3} D. 3100 cm^{3} 
Answer 2:


Q3:

What is the surface area of the following sphere?

A. 27.9 cm^{2} B. 111.6 cm^{2} C. 334.8 cm^{2} D. 37.2 cm^{2} 
Answer 3:


Q4:

A giant spherical hot air balloon has a diameter of 21.3 metres. What is its radius? 
A. 42.6 m^{}B. 10.65 m^{}C. 4.62 cm^{}D. 5.325 m 
Answer 4:


Q5:

What would be the volume of the hot air balloon in question 4? 
A. 1406 m^{3}^{}B. 4993 m^{3}C. 14979 m^{3}^{}D. 3745 m^{3} 
Answer 5:


Q6:


Assuming the Earth is a sphere, with a diameter of 12,700 kilometres, find its approximate volume. 

A. 2.5 × 10^{13} km^{3} B. 2.0 × 10^{9} km^{3} C. 1.1 × 10^{12} km^{3} D. 6.7 × 10^{8} km^{3} 
Answer 6:


Q7:

What would be the circumference of a sphere with a radius of 32 mm?

A. 99.2 mm^{}B. 198.4 mm^{}C. 3174.4 mm^{}D. 396.8 mm

Answer 7:


Q8:

A sphere has a diameter of 1 m, what is its volume?

A. 0.52 m^{3}^{}B. 1.55 m^{3}^{}C. 4.65 m^{3}^{}D. 3.1 m^{3} 
Answer 8:


Q9:

What is the surface area of the sphere in question 8? 
A. 1.12m^{2} B. 0.56 m^{2} C. 6.2 m^{2} D. 3.1 m^{2} 
Answer 9:


Q10:

A sphere has a volume of 800 cm^{3.}
What is its radius?

A. 5.8 cm^{}B. 64.5 cm^{}C. 4.0 cm^{}D. 9.3 cm 
Answer 10:

