Sunday, July 8, 2012

Your Questions About Brick Siding Cost

Lizzie asks…Find the Dimensions of the garden such that the cost of the materials is minimized?A rectangluar garden of area 75 square feet is to be surronded on three sides by a brick wall costing $12 per foot and on one side by a fence costing $7 per foot.Mr. Thin Brick answers:Let B be the breadth & L the length in ft

obviously the brick wall should cover 2B + L to reduce cost


cost = 12(2B+L) + 7L = 24B + 19L

now BL = 75 so B = 75/L

and cost C = 24*75/L + 19L = 1800/L +

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