The answer is c
the rhombus above is formed by 4 triangles
area of one triangle= 9*13.5*0.5=60.75
area of 4 triangles = 4*60.75=243
Then, the median is found by taking the mean (or average) of the two middle most numbers.
Multiplication would be the inverse operation of division. so it would be, 3 x 34 = 102