To find the circumference, you would use 2πr.
Answer:
2*π*16
=100.53in^2
I think you will have t use theorem
Ba=Rv^2+vo^2
Ba=4^2+7^2
Ba=16+49
Ba=65
Given:
y is directly proportional to x.
when 
To find:
The equation that connects y with x.
Solution:
It is given that, y is directly proportional to x. So,

...(i)
Where, k is the constant of proportionality.
We have,
when
. Substituting these values in (i), we get
Divide both sides by 5.
Substituting
in (i), we get
Therefore, the required equation is
.
C because you got to find the like term term
Similar figures are the same shape but not the same size. you can find out the scale by using parallel lines.