SAT II Math I : Geometry

Study concepts, example questions & explanations for SAT II Math I

varsity tutors app store varsity tutors android store

Example Questions

Example Question #1 : 3 Dimensional Geometry

Example cylinder

Figure not drawn to scale.

What is the volume of the cylinder above?

Possible Answers:

52.36 in3

48.79 in3

66.13 in3

56.55 in3

94.25 in3

Correct answer:

56.55 in3

Explanation:

In order to find the volume of a cylinder, you find the area of the circular top and multiply it by the height.

Example cylinder

The volume of the cylinder is 56.55 in3

Example Question #1 : Volume

Cone example

Figure not drawn to scale

If the volume of the cone above is 47.12 ft3, what is the radius of the base?

Possible Answers:

5 ft

2 ft

3 ft

4 ft

3.5ft

Correct answer:

3 ft

Explanation:

Because we have been given the volume of the cone and have been asked to find the radius of the base of the cone, we must work backwards using the volume formula.

Cone example

The radius of the base of the cone is 3 ft.

Example Question #1 : Volume

Box example

Figure not drawn to scale.

What is the volume of the above image?

Possible Answers:

64 yd3

42 yd2

42 yd3

32 yd3

84 yd2

Correct answer:

42 yd3

Explanation:

Box example
You can find the volume of a box by following the equation below:

The surface area of the box is 42 yd(remember that volume measurements are cubic units NOT square units)

Example Question #1 : Volume

What is the volume of the following tetrahedron? Assume the figure is a regular tetrahedron.

Tetrahedron

Possible Answers:

Correct answer:

Explanation:

A regular tetrahedron is composed of four equilateral triangles. The formula for the volume of a regular tetrahedron is:

, where  represents the length of the side.

Plugging in our values we get:

Example Question #2 : Volume

Find the volume of a tetrahedron with an edge of .

Possible Answers:

Correct answer:

Explanation:

Write the formula for the volume of a tetrahedron.

Substitute in the length of the edge provided in the problem.

Rationalize the denominator.

Example Question #1 : How To Find The Volume Of A Tetrahedron

Find the volume of a tetrahedron with an edge of .

Possible Answers:

Correct answer:

Explanation:

Write the formula for the volume of a tetrahedron.

Substitute in the length of the edge provided in the problem:

Cancel out the  in the denominator with one in the numerator:

A square root is being raised to the power of two in the numerator; these two operations cancel each other out. After canceling those operations, reduce the remaining fraction to arrive at the correct answer:

Example Question #2 : How To Find The Volume Of A Tetrahedron

Find the volume of a tetrahedron with an edge of .

Possible Answers:

Correct answer:

Explanation:

Write the formula for finding the volume of a tetrahedron.

Substitute in the edge length provided in the problem. 

Cancel out the  in the denominator with part of the  in the numerator:

Expand, rationalize the denominator, and reduce to arrive at the correct answer:

Example Question #3 : How To Find The Volume Of A Tetrahedron

Find the volume of a tetrahedron with an edge of .

Possible Answers:

Correct answer:

Explanation:

Write the formula the volume of a tetrahedron.

Substitute the edge length provided in the equation into the formula.

Cancel out the denominator with part of the numerator and solve the remaining part of the numerator to arrive at the correct answer.

Example Question #4 : How To Find The Volume Of A Tetrahedron

Find the volume of a tetrahedron with an edge of .

Possible Answers:

Correct answer:

Explanation:

Write the formula the volume of a tetrahedron and substitute in the provided edge length.

Rationalize the denominator to arrive at the correct answer.

 

Example Question #5 : How To Find The Volume Of A Tetrahedron

Find the volume of the regular tetrahedron with side length .

Possible Answers:

Correct answer:

Explanation:

The formula for the volume of a regular tetrahedron is:

Where  is the length of side. Using this formula and the given values, we get:

Learning Tools by Varsity Tutors