Answer:
Step-by-step explanation:
The surface area of a sphere (which the earth is considered to be) = 4 pi r^2
pi = 3.14
r = 6340
Area = 4 * 3.14 * 6340 * 6340 = 504856736 square km.
You should either round this to 505,000,000 or express a value in scientific notation.
5.05 * 10^8
4(2x + 10)=0
8x + 40 = 0
8x = -40
x = -5
Standard calculator will tell you that this is <span>1.1034455e+18 If that makes sense</span>
