<PRE><B>Question 878440</B>
The area of a triangle is {{{1/2}}} base * height
360 = {{{1/2}}} b * h
Multiply each side by 2
720 = b * h
b = 5h
Substitute the value of B from the second equation into the first.
720 = (5h) * h
720 = 5{{{h^2}}}
Divide each side by 5
144 = {{{h^2}}}
Take the square root of each side
12 = h
.
The height is 12.  The base is 5*12, or 60.
60 * 12 = 720
{{{1/2}}} of that is 360.</PRE>