Question 443062
Recall {{{A = expr(1/2)*b*h}}}
We know {{{A = 27}}} {{{h = 1.5b = (3/2)b}}}

{{{27 = (1/2)(3/2)b *b}}}
{{{27 = (3/4)b^2}}}
{{{(4/3)27 = b^2}}}
{{{36 = b^2}}}
{{{b = 6}}}

Our base is 6.