Answer: 1 is not a perfect square. 3 is the only prime number one less than a square.
Answer:
I think I explained the circle one before so I'll explain the left question because I wanted some points.
here,
area of circle is πr² which is given= 12 π cm²
so πr²= 12π
r= 2√3
d= 2r= 4√3
AB is diameter so AB= 4√3
Answer:
Step-by-step explanation:

Answer: 6-R
Step-by-step explanation:
Answer:
Angle BAF and angle BAC is incorrect.
They overlap: adjacent angles do not overlap.