Answer:
8.8ft/s
Explanation:
Height of pole=11 foot
Height of man=6 foot
Let x be the distance of man from the pole and y be the distance of tip of shadow from the base of the pole.
Two right triangles are similar then the ratio of their corresponding sides are equal
Differentiate w.r.t t
Hence, the tip of her shadow is moving at the rate 8.8ft/s when she is 45 feet from the base of the pole