Answer:
Circle requires ≈ 20 m of edging
Step-by-step explanation:
A = πR²
R = √(A/π)
C = 2πR = 2π√(A/π)
C = 2π√(30/π) = 19.41625... ≈ 20 m
square needs ≈ 22 m of edging
equilateral triangle needs ≈ 25 m of edging
Here is the equation you need:
3(x + 9) = 2x - 7
You finish.
(-3/4m) -(1/2)=2+(1/4m)
-(1/2)=2+m
m= -3/2
