F(L,W,H,k,T)=(0.024*T^1.3)*(L*W+2*(L+W)*(H*(200-H))^0.5+3.14*H*(200-H))*10^(-6)
F(30,20,99,1,42.5)

Ԥ׻(߶С100ʱ)
L=30      'ﳤ(m)
W=20      '(m)
H=90      '(m)
k=1       'Уϵ
T=42.5     'ƽױ 36 뽭42.5 ɳƺ40.1 48.5
Ng=0.024*Td^1.3 
'׻ƽܶ(/km2.a)
Ae=(L*W+2*(L+W)*(H*(200-H))^0.5+3.14*H*(200-H))*10^-6 
'Ч(km2)
k*Ng*Ae 'Ԥ׻N