Volume of Spheres (Grade 8)
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Volume of Spheres
1.
What is the formula for the volume of a sphere?
- [math]V = l xx w xx h[/math]
- [math]V = 1/3pir^2h[/math]
- [math]V=pir^2h[/math]
- [math]V=4/3pir^3[/math]
2.
Find the volume of a sphere with a radius of 20 mm. Use 3.14 for pi.
- 251.2 cubic millimeters
- 125.6 cubic millimeters
- 100,480 cubic millimeters
- 33,493.33 cubic millimeters
3.
The diameter of Earth is about 7,918 miles. Which of the following is the best estimate of Earth's volume?
- [math]5.0 xx 10^4[/math] cubic miles
- [math]10.0 xx 10^4[/math] cubic miles
- [math]2.6 xx 10^11[/math] cubic miles
- [math]2.1 xx 10^12[/math] cubic miles
4.
A spherical water tower has a diameter of 15 meters and is filled completely with water. How much water is in the tank?
- [math]14137 m^3[/math]
- [math]1767 m^3[/math]
- [math]994 m^3[/math]
- [math]563 m^3[/math]
5.
Find the volume of the sphere with a diameter of 8.
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