Question

Pascal с условием и анализом найдите площади равносторонних треугольников, если их стороны равны: 1см, 5см, ..., 21см.​

Answer 1

Ответ:

var

s,a:real;

begin

write('vvedite dlinny A= ');

readln(a);

s:=(sqrt(3)*sqr(a))/4;

writeln(s:2:2);

end.

Объяснение: ручной ввод стороны

Answer 2

Pascal is a programming language that allows you to solve various problems, including mathematical ones. In order to find the areas of equilateral triangles with side lengths ranging from 1 cm to 21 cm, we can use Pascal to write a program that calculates the areas for each side length. Here's an example of how you can do this:

program CalculateAreas;

const
  MAX_SIDE_LENGTH = 21;

var
  sideLength, area: real;

begin
  for sideLength := 1 to MAX_SIDE_LENGTH do
  begin
    area := (sqrt(3) / 4) * sideLength * sideLength;
    writeln('Side Length:', sideLength:2:0, ' cm', ' Area:', area:4:2, ' cm^2');
  end;
end.

Let's break down the code:

- We start by defining a constant `MAX_SIDE_LENGTH` with the maximum side length value (21 in this case). - We declare two variables: `sideLength` to store the current side length and `area` to store the calculated area. - Using a `for` loop, we iterate from 1 to `MAX_SIDE_LENGTH` to cover all the side lengths. - Inside the loop, we calculate the area of the equilateral triangle using the formula `(sqrt(3) / 4) * sideLength * sideLength`. - Finally, we output the side length and the corresponding area using the `writeln` function.

When you run this program, it will calculate and display the areas of the equilateral triangles for each side length ranging from 1 cm to 21 cm.

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