Answer:
6
Step-by-step explanation:
Remember the last question? to find circumference you have to multiply the diameter by 3.14? well same here except you divide the circumference by 3.14 to get the diameter. so divide 18.84 ÷ 3.14 = 6
~R3V0

(pi times d)
air sacs or alveoli the lungs and blood 3 transport
of respiratory gases
Answer:
x = 17, angle 1 and 2 = 45
Step-by-step explanation: