How fast is the area of the rectangle increasing

Reference no: EM13196535

A screen saver displays the outline of a 3 cm by 2 cm rectangle and then expands the rectangle in such a way that the 2 cm side is expanding at the rate of 4 cm/sec and the proportions of the rectangle never change(ie. the ratio of the length to the width remains constant). How fast is the area of the rectangle increasing when its dimensions are 12 cm by 8 cm?

Reference no: EM13196535

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