Question 1071549
The area of a  triangle is {{{ (1/2)bh }}},  where b=base, and h=height

  So {{{ (1/2)bh = 18 }}} —> {{{ bh = 36 }}}

The possible integer combinations of (b,h) are therefore:
(1,36), 
(2,18),
(3,12),
(4,9),
(6,6),
(9,4),
(12,3),
(18,2),
(36,1)