Could someone me need answer asap

Here we use altitude rule which states that

Ratio of part of hypotenuse and height= ratio of height and remaining part of hypotenuse .

So here parts of hypotenuses are r and s and h is the hypotenuse. SO we will get

Correct option is s.

1. d.90

2. e. none of these (80)

3. a. 0

4. b. 6

5. e. none of these (10)

6. a. 5