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Answer:
150
Step-by-step explanation:
Since EC is 180,
180-30=150
Answer:
Option D
Step-by-step explanation:
By using geometric mean theorem in the given right triangle ABC,

BD² = AD × DC
h² = (AC - CD) × DC
h² = (25 - 16) × 16
h² = 9 × 16
h = 
h = 12
Therefore, measure of side h = 12 units.
Option D will be the correct option.