Question 124878
S=16AD^-2/3
S=16*810*23,245^-2/3 [NOTE: X^-2/3=1/CUBE ROOT(X^2)].
S=12,960*[1/(CUBE ROOT 23,245^2)]
S=12,960/(CUBE ROOT 540,330,025)
S=12,960/814.5
S=15.9 IS THE ANSWER.