4. Note: Please give all approximate answers rounded to nearest thousandths. Keep answers exact in calculator until very end of calculations. Round Area answer at the end of your calculations. 4) A cup saucer is shaped like a regular decagon with a diameter of 5.5 inches as shown. Round to the nearest thousandth. a. What is the length of the apothem of the saucer? b. What is the perimeter of the saucer? c. What is the area of the saucer? 5.5 in.