C. The upper quartile is shown by the end of the box.
<h2>
The required "option D. 9.6" is correct.</h2>
Step-by-step explanation:
In given figure,
AD = x, DB = 12, BE = 8 and EC = 10
To find, the value of x = ?
Use the Side-Splitting Theorem,
We know that,

⇒ 
⇒ x =
⇒ x = 
⇒ x = 9.6
∴ The value of x = 9.6
Thus, the required "option D. 9.6" is correct.
Answer:
90
Step-by-step explanation:
- When converting from centimetres to millimetres you must multiply by ten.
- 9cm x 10 = 90mm