D.the number of times the drug has removed a certain percentage of fluid from the patient's lungs
Answer:
2.8
Step-by-step explanation:
Answer: hey check this image the answer is in the image
Step-by-step explanation:
Area of circle = πd²/4, where d = diameter
= π*6*6/4 = 9π ≈ 9 *3.1416 ≈ 28.2744 cm²
Area ≈ 28.27 cm²
Hope this explains it.