Question: An advertisement consists of a rectangular printed region plus 4-cm margins on the sides and 5-cm margins at top and bottom. If the area of

An advertisement consists of a rectangular printed region plus 4-cm margins on the sides and 5-cm margins at top and bottom. If the area of the printed region is to be 230 cm², find the dimensions of the printed region that minimize the total area. Printed region: l =

, w =

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