Answer: The following code is in c++ 
#include <iostream>
#include<math.h>
using namespace std;
int main()
{
    float a,b,c;
    cout<<"Enter height and base of triangle\n";
    cin>>a>>b;  //reading two sides from user
    c=sqrt(pow(a,2)+pow(b,2));  //calculating hypotenuse
    cout<<"Length of hypotenuse is "<<c;  //printing third side of triangle
    return 0;
}
OUTPUT :
Enter height and base of triangle                                                                                             
3                                                                                                                              
4                                                                                                                              
Length of hypotenuse is 5   
Explanation:
In the above code, three variables a, b and c of int type are declared. After that, it is asked from user to enter the value of a and b. The user puts the value and then c is calculated with the help of Pythagoras theorem formulae which squares the values of two sides and then adds them to calculate hypotenuse of a right angled triangle and finally c is printed to console.
 
        
             
        
        
        
Answer:
e means we don't know so I can't tell the answer
 
        
             
        
        
        
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