Geometry Problems on the GRE — Strategies and Practice Questions - dummies

Geometry Problems on the GRE — Strategies and Practice Questions

By Consumer Dummies

The geometry problems on the GRE Math test may include basic shapes and 3-dimensional shapes. If you’re fresh out of math class, you’ll probably be fine going through these quickly.

If it’s been a few years since you’ve done any geometry, you may want to work these questions carefully. Students who take the GRE tend to make the following mistakes:

  • Mistakes in interpreting the question, such as using the wrong line or angle measures

  • Mistakes in working the problem, such as applying the wrong formula

  • Not reading the question carefully, and missing what they must actually look for

The following practice questions will test your skills at dealing with both a simple shape and a 3-dimensional shape.

Practice questions

  1. Find the area.

    image0.png

    A. 17 cm

    B. 23 cm

    C. 33 cm

    D. 60 cm

    E. 66 cm

  2. Based on this diagram,

    image1.png

    calculate the total surface area of the cylinder.

    image2.png

Answers and explanations

  1. C.

    image3.png

    The area is found by using the formula

    image4.png

    Substitute the values from the diagram into the formula:

    image5.png

    The area is 33 centimeters, Choice (C).

  2. A.

    image6.png

    Use the formula for surface area of a cylinder:

    image7.png

    The correct answer is Choice (A).