The area of the rectangle is 12 cm 2. The area of a rectangle can also be calculated using the following formula. Calculate the area of the large rectangle. \(8 \times (4 + 4 + 4) = 8 \times 12 ...

Prompt the user to enter the lengths of each side of a triangle and then calculate and print the perimeter of the triangle (the sum of all of the side lengths). # Here's a sample run of the program ...