All SAT II Math I Resources
Example Questions
Example Question #81 : Solid Geometry
What is the volume of a regular tetrahedron with an edge length of 6?
The volume of a tetrahedron can be solved for by using the equation:
where is the measurement of the edge of the tetrahedron.
This problem can be quickly solved by substituting 6 in for .
Example Question #51 : Tetrahedrons
What is the volume of the tetrahedron shown below?
The volume of a tetrahedron is .
This tetrahedron has a side with a length of 8.
, which becomes .
You can reduce that answer further, so that it becomes
.
Example Question #21 : Volume
Find the volume of sphere whose radius is 15.
The volume of a sphere is given by the equation:
The problem says that the radius is 15, so plug in 15 for r and simplify.
Example Question #101 : Geometry
Find the volume of a sphere with the diameter of .
Write the equation for the volume of a sphere.
The radius is half the diameter, or .
Substitute the radius into the equation.
Reduce the fractions.
The answer is:
Example Question #102 : Geometry
Determine the volume of a rectangular prism if the length is , width is , and the height is .
Write the formula for the volume of a rectangular prism.
Substitute the dimensions into the formula.
Reduce this fraction.
The answer is:
Example Question #103 : Geometry
The length of a box is half its height and two-thirds its width. The volume of the box is four cubic meters. Give the length of the box to the nearest centimeter.
None of these
Call , , and the length, width, and height of the crate.
The length of the crate is half its height, so
The length of the crate is two-thirds its width, so
The dimensions of the crate in terms of are , , and . The volume is their product:
Substitute:
Solve for :
meters.
Since one meter comprises 100 centimeters, multiply by 100 to convert to centimeters:
,
which rounds to 110 centimeters.
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