Perimeter is the addition of all 4 sides and a square as all the same sides. so every side will be the same. so if you divide 216 by 4 you get 54. you can check this by adding 54+54+54+54=216 or 54x4=216
<span>Area = length*width
U could use that here :)</span>
We are 114.28 m from the base of the plateau .
<u>Step-by-step explanation:</u>
Here we have , suppose that you are headed toward a plateau 80 meters high. if the angle of elevation to the top of the plateau is 35 degree, WE need to find that how far are you from the base of the plateau . If we see in question , it's clearly a question from application of trigonometry :
We have ,


( between base & hypotenuse )
It's a right angled triangle , So

⇒ 
⇒ 
⇒ 

⇒ 
⇒ 
Therefore, We are 114.28 m from the base of the plateau .
N+2(2n-5)=20
Distribute
n+4n-10=20
Combine like terms
5n-10=20
Add 10 to both sides
5n=30
Divide both sides by 5
n=6
Final answer: 6
The missing fraction would be

since it is exactly in the halfway between