Answer:
The circumference would be 25.12 mm
Step-by-step explanation:



Given parameters:
Midpoint of AB = M(3, -1)
Coordinates of A = (5,1)
Unknown:
Coordinates of B = ?
Solution:
To find the mid point of any line, we use the expression below;
and 
where
and
= coordinates of the mid points = 3 and -1
x₁ = 5 and y₁ = 1
x₂ = ? and y₂ = ?
Now let us input the variables and solve,
3 =
and -1 = 
5 + x₂ = 6 -2 = 1 + y₂
x₂ = 1 y₂ = -2 -1 = -3
The coordinates of B = 1, -3
Hi there!
(3/2)2+4<span>÷2*3 = 9
Hope this helps! :)</span>
Answer: I’m not sure, but I think it is solid C.
Step-by-step explanation: Please, make sure you have some knowledge when you answer this question. My answer is an educated guess. I do not want to be responsible for your wrong answers.