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Fractional Steps

Problem

A set of steps leading up to a platform are to be constructed. The platform is 3' 8" above the ground and each tread has a fixed thickness of 11/8". For safety and comfort each riser should measure between 5 and 7 inches and practically cannot be cut more accurate than 1/8".

How many risers should be used and what size should they be?

Problem ID: 349 (30 Nov 2008)     Difficulty: 2 Star

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