Answer:
B correct me if i am wrong!
Step-by-step explanation:
Answer:
the second one to the right
Step-by-step explanation:
the first one makes a square
the third sides are too tiny
the last one just doesnt make anything
Answer:

Step-by-step explanation:
Given: 
To find: 
Solution:
From the image, 
Put 


Therefore,

Answer:
If the 21 cm is circumference, the answer would be 35.09.
If the 21 cm is radius, the answer would be 1385.44.
If the 21 cm is diameter, the answer would be 346.36.
Answer:
cube root (x-9)
Step-by-step explanation:
You have the right approach, but you wrote 3*square root(x-9)
What you need is cube root (x-9).