Question 152712
scale of one inch to nine feet:
* The ratio (scale) is {{{1inch/9feet}}}
For every 1 inch = 9 feet
Based on the boat made:
{{{Length=10cross(inches)*(9feet/cross(1inch))}}}
{{{Length=90feet}}} ------------------> actual Length
{{{Widt=1.8cross(inches)*(9feet/cross(1inch))}}}
{{{Width=16.2feet}}} ---------------> actual Width 
Thank you,
Jojo