Answer: 
Step-by-step explanation:
Substitute the value of the radius of the Earth into the formula given in the problem, where r is the radius, to obtain the surface area of the Earth:

The problem says that the dry land forms 29.2% of the Earth’s surface, therefore, multiply the surface area by 
Threfore, the area of dry land is the following:

The solution to the system of equation is
(- 3,5,6)
Not sure!!!!!;( next time put a pic
Answer:
The ribbon that is 30 inches is longer.
Step-by-step explanation:
1 foot = 12 inches
2 feet = 24 inches
30 inches > 24 inches