Assignment:
A radio station sends out waves in all directions from a tower at the center of the circle of broadcast range.
- If the broadcast range has a diameter of 196 miles, determine how large an area is reached.
- If the broadcast range increases to a diameter of 210 miles, what is the area reached?
- If the broadcast range decreases to a diameter of 140 miles, what is the area reached?
Provide complete and step by step solution for the question and show calculations and use formulas.