Answer
The surface area of the Earth is $~5.1\times 10^{14}~m^2~$
The surface area of the Earth is $2.0 \times 10^8~mi^2$
Work Step by Step
We can find the surface area of the Earth:
$A = 4\pi~r^2$
$A = (4\pi)~(6.4\times 10^6~m)^2$
$A = 5.1\times 10^{14}~m^2$
We can convert the surface area to units of square miles:
$A = 5.147\times 10^{14}~m^2 \times (\frac{1~mi}{1609~m})^2 = 2.0 \times 10^8~mi^2$
The surface area of the Earth is $~5.1\times 10^{14}~m^2~$
The surface area of the Earth is $2.0 \times 10^8~mi^2$
