Dart fundamental tasks Calculate area and perimeter of circles, rectangles, cubes and calculate volume of tubes 1. Calculate the area and perimeter of a rectangle void main() { int length = 11; int width = 5; //calculating the var area = length //calculating the var perimeter = 2 area of a rectangle * width; perimeter of the rectangle * length * width; //display the area and perimeter of the rectangle print('\nThe area and perimeter of the rectangle'); print('Length = $length cm, Width = $width cm'); print('Area = $area cm'); print('Perimeter = $perimeter cm'); } image 1 area and perimeter of a rectangle 2. calculate the area and perimeter of a square void main() { //calculating the area and perimeter of a square int side = 5; //calculating the area of a square var area = 2 * side; //calculating the perimeter of a square var perimeter = 4 * side; //display the area and perimeter of the square print('\nThe area and perimeter of square p'); print('Side length = $side cm'); print('Area = $area cm'); print('Perimeter = $perimeter cm'); } image 2 area and perimeter of a square 3. calculate the area and circumference of a circle void main() { //calculating the area and circumference of a circle final phi = 3.14; double r = 9; // calculating the area of a circle var area = phi * r * r; //calculating the circumference of a circle var perimeter = phi * 2 * r; //display the area and circumference of the circle print('Area and circumference of a circle'); print('Radius = $r cm'); print('Area = $area cm'); print('Perimeter = $perimeter cm'); } image 3 area and perimeter of a circle 4. calculate the volume of the tube void main() { //calculating the volume of the tube final phi = 3.14; double r = 10; int t = 30; // Calculating the volume of the tube var volume = phi * r * r * t; //display the print('Volume print('Radius print('Volume volume of the tube of the tube'); = $r cm, height = $t cm'); = $volume cm3'); } image 4 volume of the tube