Answer:
33
Step-by-step explanation:
QP=1/2 CA=1/2×66=33
QP = CR = RA = 66/2 = 33
y=-x,A
When we input -5 in for x, we get 5
When we input 7 in for x, we get -7
x^2 + y^2 = 25 (third one)
formula is x^2 + y^2 = r^2 (r = the radius)
the radius is 5 so r^2 is 25.