I’m a concrete mason myself and I can tell you it is a pain in the butt to Roto hammer a hole into the concrete to put the pipe in it’s a lot easier to just pour the concrete around it
        
             
        
        
        
Answer:
- using System;      
 - public class Program
 - {
 -  public static void Main()
 -  {
 -   Console.WriteLine("Enter number of students: ");
 -   int num = Convert.ToInt32(Console.ReadLine());
 -   string [] firstName = new string[num];
 -   string [] lastName = new string[num];
 -   
 -   for(int i=0 ; i < num; i++){
 -   	Console.WriteLine("Enter first name: ");
 -   	firstName[i] = Console.ReadLine();
 -     
 -   	Console.WriteLine("Enter last name: ");
 -   	lastName[i] = Console.ReadLine();
 -   }
 -   
 -   for(int j=0; j < num; j++){
 -   	Console.WriteLine(lastName[j] + "," + firstName[j]);
 -   }
 -  }
 - }
 
Explanation:
Firstly, prompt user to enter number of student to be stored (Line 6- 7). Next, create two array, firstName and lastName with num size (Line 8-9). 
Create a for-loop to repeat for num times and prompt user to enter first name and last name and then store them in the firstName and lastName array, respectively (Line 11 - 17).
Create another for loop to traverse through the lastName and firstName array and display the last name and first name by following the format given in the question (Line 19 - 21).
 
        
             
        
        
        
9514 1404 393
Answer:
   see attached
Explanation:
Assuming flow is uniform across the cross section of the artery, the mass flow rate is the product of the volumetric flow rate and the density.
   (5 cm³/s)(1.06 g/cm³) = 5.3 g/s
If we assume the blood splits evenly at the bifurcation, then the downstream mass flow rate in each artery is half that:
   (5.3 g/s)/2 = 2.65 g/s
__
The average velocity will be the ratio of volumetric flow rate to area. Upstream, that is ...
   (5 cm³/s)/(π(0.25 cm)²) ≈ 25.5 cm/s
Downstream, we have half the volumetric flow and a smaller area.
   (2.5 cm³/s)/(π(0.15 cm)²) ≈ 35.4 cm/s
 
        
             
        
        
        
Answer:
The level of the service is loss and the density is 34.2248 pc/mi/ln
Explanation:
the solution is attached in the Word file