Answer:
16 cm
Step-by-step explanation:
The first trapezoid has the lengths
side AD=12cm
side AB=18cm
side BC=8cm
The second trapezoid has the length
side EH=24cm which is the same as side AD (12) multiplied by 2
side EF=36cm which is the same as side AB (18) multiplied by 2
side FG=8*2
