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Problem 21 (2012 AMC 8)

AMC 8Normal

From module Geometry Basics

Problem

Marla has a large white cube that has an edge of 1010 feet. She also has enough green paint to cover 300300 square feet. Marla uses all the paint to create a white square centered on each face, surrounded by a green border. What is the area of one of the white squares, in square feet?

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