Answer: Option 'C' is correct.
Step-by-step explanation:
Since we have given that
Height of trapezoid = 4 ft
Length of longer side= 'a' = 13 ft
Length of shorter side = 'b' = 9 ft
Due to height of 4 meter there will be right angle triangle at the corners.
In right angled triangle:
Since it is isosceles trapezoid, then there two non parallel sides should be equal.
So, Perimeter of isosceles trapezoid is given by
Hence, option 'c' is correct.