Question 863013
 A. Find the capsize screening value for the Tartan 4100, which has a displacement of 23245 lbs. and a beam of 13.5 ft. using formula C = 4d^-1/3b
C = {{{4d^(-1/3)b}}}
C = {{{4*23245^(-1/3)*13.5}}}
C = 1.89 so that's right
B. Solve this formula for d.
{{{4d^(-1/3)*13.5}}} = C
{{{d^(-1/3)*54}}} = C
{{{d^(-1/3)}}} = {{{C/54}}}
d = {{{(C/54)^-3}}}
d = {{{(54/C)^3}}}
:
We can check this, replace C with 1.89213
d = {{{(54/1.89213)^3}}}
d = 23245 

C. The graph shows C in terms of d for the Tartan 4100 (b=13.5).
{{{ graph( 300, 200, -5000, 30000, -2, 10, 54*x^(-1/3)) }}}
For what displacement is the sailboat safe for sailing? Not sure about this