Answer:
i think it A
Step-by-step explanation:
So the equation for the area of a circle is

First to find the radius, you would need to divide the diameter, 26, by half, which in this case its 13.
Replace the r variable with 13 and solve:


Answer:
2√21
Step-by-step explanation:
1) Simplify.
√84
2) Simplify √84 to 2√21.
2√21
X= 7
y=77
im not 100% though