Easily, take the square root of the number in the right side to find the radius

is the answer
Answer:
The answer is A) a=-4
Step-by-step explanation:
For a variable to vary directly to another is telling you to set up a proportion
v/g = v/g
36/4 = v/11
4v = 396
v = 99
Answer:
B
Step-by-step explanation:
The square root of 21 will be halfway between 4 and 5. 4.58 ~ 4.6
The square root of 17 will be closer to 4 than 5. 4.12 ~ 4.1
3Pi/2 will beclose to 5 than 4. 4.71 ~ 4.7
4.1, 4.6, 4.7
That is B.