7 and 41/65 units Working The area of a triangle is found by using the formula; A=1/2bh where A is area, b is base and h the height substituting for given values; 12 2/5=1/2*3 1/4*h Rewriting the values as improper fractions; 62/5=1/2*13/4*h 62/5=13/8h h=62/5 *8/13 h=496/65 h= 7 41/65 units
