The document describes constructing a conference table with a rectangular center portion and semicircular ends. The perimeter is 40 feet and the area of the rectangle is twice the sum of the semicircular areas. To find the rectangle dimensions: 1) The semicircles form a full circle of radius r; 2) The rectangle area equals twice the circular area, giving an equation to solve for r; 3) The perimeter equation with r solved for gives r = 10/pi; 4) Solving for the rectangle length L using r and the perimeter gives L = 10 feet.