Answer:
4.968 cm
Explanation:
Given area of prism = 31.3 cm
This problem can be solved by using formula to calculate area of trapezium which is given below
Formula to calculate area of prism =( sum of parallel sides * perpendicular distance between parallel side )/2
let the perpendicular distance between parallel side = X
sum of parallel sides = 7.3+5.3 = 12.6 cm
Therefore by using formula
31.3 = (7.3+5.3)*X/2
=> 31.3 * 2 = 12.6*X
=> X = 62.6/12.6 = 4.968
Hence perpendicular distance between parallel side is 4.968 cm