Answer:
perimeter of trapezoid=40 units
Explanation:
trapezoid can be divided in to square and right angle triangle
let ABCD be trapezoid and it is divided in to square ABED and right angle triangle BEC
BC=hypotenuse of right angle triangle
BC=hypotenuse=

where l= BE and b=EC
given AB=8 units,CD=14 units
EC=14-8=6 units
AD=8 units
BC=
=10 units
perimeter of trapezoid=AB+BC+CD+AD
perimeter of trapezoid=8+10+14+8=40 units
perimeter of trapezoid=40 units answer