Apump is driven by electric motor with an efficiency of 0.87and with theoretical output of 22.2 gpm actually produces only 19.1 gpm. the pressure at the pump outlet is 2850 psi. if the pump has a mechanical efficiency of 0.97, what input horsepower is required to drive the pump? the electric motor is being operated for 15 hours a day and 235 day a year, how much electricity cost at $0.77 per kilowatt hour. how much operating cost is wasted yearly?

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answer:

// here is code in C++.

#include <bits/stdc++.h>

using namespace std;

//main function

int main()

{

  // variable

 int n;

 cout<<"enter a number:";

 // read the input

 cin>>n;

 // find the square root of the absolute value

 float square_root=sqrt(abs(n));

 // print the square_root

 cout<<"square root of "<<n<<" is: "<<square_root<<endl;

  return 0;

}

Explanation:

Read a number from user and assign it to "n".Then find its absolute value with abs() function.Then calculate the square root of the absolute value with sqrt() function.Print the square root of the number.

Output:

enter a number:-17

square root of -17 is: 4.12311

                                                         This is easy

                                                     sinserly Natalie 7 grader (this is not that hard)