Question

Помогите с Информатикой (Программирование на языке PascalABC.net).Нужно создать программу ... Вычислите площадь кольца Введите исходные данные Радиус кольца ->3.5 Радиус отверстия (см)->7 Ошибка! Радиус отверстия не может быть-Кольца S=PR^2

Answer 1

Var r1,r2:real;
begin
write('Радиус кольца -> ');
readln(r1);
write('Радиус отверстия (см)-> ');
readln(r2);
if r2>=r1 
 then writeln('Ошибка! Радиус отверстия не может быть >= радиуса кольца')
 else writeln('S = ',pi*(r1*r1-r2*r2):5:2);
end.

Пример:
Радиус кольца -> 7
Радиус отверстия (см)-> 3.5
S = 115.45

Answer 2

Creating a Program to Calculate the Area of a Ring

To create a program that calculates the area of a ring, you can use the PascalABC.NET programming language. Here's an example program that prompts the user for the radius of the ring and the radius of the hole, and then calculates the area of the ring:

program CalculateRingArea;
var
  ringRadius, holeRadius, ringArea: real;
begin
  writeln('Enter the radius of the ring:');
  readln(ringRadius);
  
  writeln('Enter the radius of the hole:');
  readln(holeRadius);
  
  if holeRadius >= ringRadius then
    writeln('Error! The hole radius cannot be greater than or equal to the ring radius.')
  else
  begin
    ringArea := pi * (ringRadius * ringRadius - holeRadius * holeRadius);
    writeln('The area of the ring is: ', ringArea:0:2);
  end;
  
  readln;
end.

In this program, we use the formula for the area of a ring, which is `S = π(R^2 - r^2)`, where `S` is the area, `R` is the radius of the outer circle, and `r` is the radius of the inner circle (hole). The program checks if the hole radius is greater than or equal to the ring radius and displays an error message if it is.

To run this program, you can use the PascalABC.NET IDE or any other Pascal compiler. Simply copy the code into a new PascalABC.NET project, compile, and run it. The program will prompt you to enter the radius of the ring and the radius of the hole, and then it will calculate and display the area of the ring.

Please note that the program assumes the user will enter valid numeric values for the radii. If you want to add error handling for non-numeric input, you can modify the program accordingly.

I hope this helps! Let me know if you have any further questions.