The height is 9 centimeters
The parallelogram is like rectangle
so, the area is 54 square cm
we use is Working Backward
N × 6 = 54
the × we will exchange that into ÷
so 6 ÷ 54 = N
N = 9
let's check that
9 × 6 = 54
our answer is correct
so , 9 is the correct answer
