The base of a lampshade is in the
shape of a circle and has a diameter of
13 cm. what is the circumference, to
the nearest tenth of an cm, of the base
of the lampshade? (use 3.14 for π.)

Is there a direction u in which the rate of change of f(x,y)equals=x squared minus 3 xy plus 4 y squaredx2−3xy+4y2 at p(1,2) equals 14? give reasons for your answer. choose the correct answer below. a. no. the given rate of change is smaller than the minimum rate of change. b. no. the given rate of change is larger than the maximum rate of change. c. yes. the given rate of change is larger than the minimum rate of change and smaller than the maximum rate of change.