007 - 008 Volume and surface area of earth and balloon

$A = 452.39 \, \text{ m}^2$           answer
 

Volume of gas
$V = \frac{1}{6}\pi D^3 = \frac{1}{6}\pi (12^3)$

$V = 904.78 \, \text{ m}^3$           answer

$A = 199.06 \times 10^6 \, \text{ miles}^2$           answer
 

Volume of gas
$V = \frac{1}{6}\pi D^3 = \frac{1}{6}\pi (7960^3)$

$V = 2.64 \times 10^{11} \, \text{ miles}^3$           answer