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Andrew Geller

Andrew Geller is a top GMAT tutor based out of New York City. Throughout his career he has successfully taught people from many different backgrounds, countries, and starting scores.

If the circumference of a circle inscribed in a square is 25π, what is the perimeter of the square?

If the circumference of a circle inscribed in a square is 25π, what is the perimeter of the square? A. 20 B. 25 C. 40 D. 50 E. 100 Correct Answer: E Full explanation coming soon. Send us a note if you’d like this added to the express queue! You’ll find tons of practice questions,

If the circumference of a circle inscribed in a square is 25π, what is the perimeter of the square? Read the Full Article »

In the figure shown, AC = 2 and BD = DC = 1. What is the measure of angle ABD?

In the figure shown, AC = 2 and BD = DC = 1. What is the measure of angle ABD? A. 15° B. 20° C. 30° D. 40° E. 45° Correct Answer: C Full explanation coming soon. Send us a note if you’d like this added to the express queue! You’ll find tons of practice questions, explanations for GMAT Official Guide questions,

In the figure shown, AC = 2 and BD = DC = 1. What is the measure of angle ABD? Read the Full Article »

The smaller rectangle in the figure above represents the original size of a parking lot before its length and width were each extended by w feet to make the larger rectangular lot shown. If the area of the enlarged lot is twice the area of the original lot, what is the value of w?

The smaller rectangle in the figure above represents the original size of a parking lot before its length and width were each extended by w feet to make the larger rectangular lot shown. If the area of the enlarged lot is twice the area of the original lot, what is the value of w? A. 25 B. 50

The smaller rectangle in the figure above represents the original size of a parking lot before its length and width were each extended by w feet to make the larger rectangular lot shown. If the area of the enlarged lot is twice the area of the original lot, what is the value of w? Read the Full Article »

If a sphere with radius r is inscribed in a cube with edges of length e, which of the following expresses the relationship between r and e?

If a sphere with radius r is inscribed in a cube with edges of length e, which of the following expresses the relationship between r and e? A. r = 1/2 e B. r = e C. r = 2e D. r = √e E. r = 1/4 e² Correct Answer: A Full explanation coming soon. Send us a note if you’d like this added

If a sphere with radius r is inscribed in a cube with edges of length e, which of the following expresses the relationship between r and e? Read the Full Article »