The troposphere is the lowest level of the atmosphere, so it is in contact with the Earth's surface. In contrast, the stratosphere is located above the troposphere, so it is not in contact with the Earth's surface. ... The air density and air pressure are much lower in the stratosphere.
I think it would be the answer b if it's incorrect please let me know
Answer:
19,440 Square Yards
Explanation:
15 times 4 is 60, 6 times 6 is 36, 36 times 60 is 2,160, and 2,160 times 9 is 19,440.