A rectangle has constant width

MATHEMATICS · Single correct · AP · Calculus AB · Contextual Applications of Differentiation · Contextual Applications of Differentiation

Problem

8\,\text{cm}

. If its length increases at

4\,\text{cm/s}

, find the rate at which the perimeter is changing when the length is

5\,\text{cm}

. (a)

32\,\text{cm/s}

(b)

4\,\text{cm/s}

(c)

8\,\text{cm/s}

(d)

16\,\text{cm/s}