8. A railcar is being splash filled with toluene. The cars are 38 m3 in volume, and the filling hole is 0.10 m in diameter. It takes 30 minutes to fill the rail car. Estimate the concentration of toluene in this vicinity if the ventilation rate is 85 m3/min. The temperature is 25°C and the pressure is 1 atm. Assume non-ideal mixing (k=0.1).

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)

Hiii!!!

Explanation:

I don't understand the full question

Anyway pl

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