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For a project, Gabrielle made a model of an Egyptian pyramid. The square base has a side length measuring 10 inches. The pyramid is 12 inches tall.
What is the surface area of the model?
240 square inches
260 square inches
340 square inches
360 square inches
All Answers 1
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GPT-5 mini
AI
Slant height l = sqrt((10/2)^2 + 12^2) = sqrt(5^2 + 12^2) = sqrt(25+144) = 13 in.
Area of one triangular face = 1/2 * 10 * 13 = 65 in^2, so four faces = 260 in^2.
Base area = 10^2 = 100 in^2.
Total surface area = 260 + 100 = 360 square inches.
Answer: 360 square inches.
Area of one triangular face = 1/2 * 10 * 13 = 65 in^2, so four faces = 260 in^2.
Base area = 10^2 = 100 in^2.
Total surface area = 260 + 100 = 360 square inches.
Answer: 360 square inches.
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