A triangular garden plot has one 16 foot side. The height perpindicular to that side is 12 feet 6 inches. If each plant requires 36 sq. in. of space, how many plants can be placed in the plot?
Divide the area of the triangle by the area required per plant. That will give you the number of plants.
Make sure both are in the same units (square feet or square inches).
36 in^2 = 0.25 ft^2
triangle area = (1/2) base x height