Answer:
The length of the altitude CD is 3.3 units .
Option (D) is correct .
Step-by-step explanation:
By using the pythagorean theorem
Hypotenuse² = Perpendicular² + Base²
Now in ΔCDA
Hypotenuse = CA = 6 unit
Base = AD = 5 units
Perpendicular = CD
Put all the values in the above
6² = CD² + 5²
As
6² = 36
5² = 25
CD² = 6² - 5²
= 36 - 25
CD² = 11
\(CD = \sqrt{11}\)
CD = 3.3 unit (Approx)
Therefore the length of the altitude CD is 3.3 units .
Option (D) is correct .
