The shadow of a 29-m high building is increasing at the rate of 18 cm/min when the shadow is 16 m long. How fast is the distance from the top of the building to the end of the shadow increasing? . . . . . Let a = the length of the shadow, b = the height of the building, and c = the distance from the top of the building to the end of the shadow. How can the distance between the building and the shadow be found? O A. Use the Pythagorean theorem to find c. O B. Add a to b to find c. O C. Subtract a from b to find c. O D. Multiply a and b to find c