⇒Δ=6^2+4*72= 36+288=324
V324=18
x1= ( -6+18)/2=6
x2= (-6-18)/2=-24/2=-12
⇒ x1= 6
x2= - 12
I believe it’s D I’m not 100 percent sure tho
Pi r squared = area of circle
Pi d = circumference
Therefore 9/4 is the radius squared so the squared root of this is 3/2 (radius)
You then double this to get diameter which is 6/2 or 3 Pi
