A rectangular advertising billboard must contain of display area
MATHEMATICS · Subjective · CBSE · Mathematics · Applications of Derivatives · Applications of Derivatives
Problem
A rectangular advertising billboard must contain 72ft2 of display area. Framing along the top and bottom edges costs $12 per foot, while framing along each side edge costs $20 per foot. Let h be the height of the billboard in feet. Determine the value of h that minimizes the total framing cost.