Question 127204
Start by finding the length of the base of the triangular sail.
Since you have a right triangle whose height is 24 feet and whose hypotenuse is 26 feet, then the base must be 10 feet because these three numbers form a pythagorean triplet of 10, 24, and 26.
To show this, use the Pythagorean formula:
{{{c^2 = a^2+b^2}}}
{{{26^2 = 24^2 + 10^2}}}
{{{676 = 576+100}}}
{{{676 = 676}}}
Now that you know the base is 10 feet, you can find the area of the sail by:
{{{A = (1/2)bh}}}
{{{A = (1/2)(10)(24)}}}
{{{A = 120}}} sq.ft.
Now, at $10 per sq.ft., a sail made of Dacron will cost of 120 sq.ft X $10 = $1200.00