I'm pretty sure the answer is exponent since it tells you how many times to multiply the number beside it by itself.
Example:

It is NOT 3 × 4 = 12
It is 3 × 3 × 3 × 3 = 9 × 3 × 3 = 9 × 9 = 81
~~
I hope that helps you out!!
Any more questions, please feel free to ask me and I will gladly help you out!!
~Zoey
Answer:
A = πr² ← r is the radius and r = \frac{1}{2} d ← d is the diameter
Hence
π (\frac{1}{2} d)² = A, that is
\frac{d^2\pi }{4} = A ( multiply both sides by 4 )
d²π = 4A ( divide both sides by π )
d² = \frac{4A}{\pi } ( take the square root of both sides )
d = \sqrt{\frac{4A}{\pi } }
Answer:
depends on the options
Step-by-step explanation:
a parallel line would be y = 1/2x + b, where b is any number