Answer:

Step-by-step explanation:
The hypotenuses are equal in length of both triangles.





Answer:
Prime. Prime numbers can only be divided by the whole number, or one.
Height=15
Explanation:
Area of a triangle= 1/2base x height
Plug in information
30=1/2 x 4 x h
Solve 1/2 x 4 = 2
30= 2 x h
Divide both side by two
30/2=2 x h/2
Solve:
15= h