Answer:
19 inche
Step-by-step explanation:
Perimerer of rectangle = 2(length + breadth)
60 = 2(length + 11)
60/2 = (length + 11)
30 - 11 = length
19 = length
A trapezoid has one pair of parallel sides and a parallelogram has two pairs of parallel sides. So a parallelograms are also trapezoids.