Hey there!!
The formula for the area of a square - s²
where s = side
s² = 345
s = √345
s = 18.57 ft
Fence shall be three sides
So 18.57 × 3
The required answer = 55.71 ft
Hope my answer helps!
Area=pi times radius^2 so
if area=4pi=pi times r^2
4 times pi=r^2 times pi
divide both sdies by pi
4=r^2
square root
2=radius since legnth cannot be negative
radius=1/2 diamters
2 radius=diameter
2(2)=diameter=4
diameter=4
D is the correct answer to the equation.
