Answer:
Step-by-step explanation:
Longer side =18
side opposite to 30=18/2=9
third side=√(18²-9²)=9√3
a = length
b = height(width)
a=3b
2(a+b)=120
2(b+3b)=2(4b)=8b
8b=120
b=15
a=45
length is 45 feet
width is 15 feet
Answer: 12 21
IDK
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