Good morning,
Answer:
<h2>r = 4 cm</h2>
Step-by-step explanation:
V = h × (base area)
= 12 × (π×r²)
then 192π = 12π×r²
Then 192 = 12×r²
Then r² = 192÷12 = 16
Then r = √16 = 4.
:)
Answer/Step-by-step Explanation:
4. Midpoint (M) of AB, for A(-2, -3) and B(1, 2) is given as:

Let 

Thus:


5. Given M(3, 5) as midpoint of CD, and C(-1, -1),
let 


Rewrite the equation to find the coordinates of D
and 
Solve for each:












Coordinates of D is (7, 11)
Answer: D
Step-by-step explanation: Only has 2 acute angles and 2 obtuse angles
Let me know if I'm wrong. If not I'm glad I could help
I believe that your answer is option b - x = -7