Aparallelogram with an area of 160.5 in2 has a height that measures 7.5 in. find the length of the base.

Given: 160.5 in²=area of paralellogram
            7.5 in = height
             b = ?
Let us work out for the missing base. Basically, the formula in finding the area of a parallelogram is A= b × h. Since base is missing, we will use b= A/h where, area is divided by the measure of the height. 
so, 
 b= A/ h
   = 160.5 inch² ÷ 7.5 inch
   = 21.4 inch
Therefore base has the measure of 21.4 inches. 
Check:
A= b × h
  = (21.4 inch)(7.5 inch)
A= 160.5 inches²