Answer:
21
Step-by-step explanation:
are you dumb?
S = a² => 20 = a² => a = √20 ≈ 4.5 cm
P(-2,8) Q(-8,8) R(-8,2) S(-2,2)
Step-by-step explanation: 180 degree rotation rule = (x,y) ---- (-x,-y)
ex : point B (-2, 7) will be B' (2, -7)