Answer:
197 million square miles
Step-by-step explanation:
Remark
What the equator is telling you is that the circumference around the earth is approximately 24902 miles. So before you can find the surface area, you need to find the radius of that circumference.
Equations
C = 2*pi*r
Area = 4pi*r^2
Solution
Radius
C = 24902
pi = 3.14
r = ?
24902 = 2 * pi * r
r = 24902 / (2 * pi)
r = 3965.29
==========
Surface Area
Area = 4 * pi * r^2
Area = 4 * 3.14 * 3965.29^2
Area = 4 * 3.14 * 15,723,498
Area = 197 000 000 square miles
