Entry Exam Category: High School Equivalency Exams
Course: General Education Development (GED)
Exam: GED Math practice test

Practice Question

A manufacturing plant makes dog toys in the shape of a sphere. The diameter of each dog toy is 3 inches. What is the surface area, in square inches of each dog toy?

Answer Choices

  • A: 113.04
  • B: 75.36
  • C: 28.26
  • D: 37.68

Correct Answer: C

Rationale: Surface area of a sphere = 4πr^2. Diameter = 3 in., radius = 1.5 in. Surface area = 4 * π * (1.5)^2 = 4 * π * 2.25 ? 28.26 in². Thus, the correct answer is 28.26.

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