16.5 / p = 11 / 18
p = 16.5 × 18 / 11
p = ( 16.5 / 11 ) × 18
p = 1.5 × 18
p = 27
Answer:
perimeter = 30 ft
Step-by-step explanation:
13 + 5 + 12 = perimeter = 30 ft