Question

Найли площадь прямоугольника ширина 40см длина х периметр 200см

Answer 1

40+40=80, 200-80=120, 120/2=60, 40*60=2400

Answer 2

Calculating the Area of a Rectangle

To find the area of a rectangle with a width of 40 cm and a perimeter of 200 cm, we can use the following steps:

1. Calculate the Length of the Rectangle: - Let's denote the length of the rectangle as 'x'. - We know that the perimeter of a rectangle is given by the formula: \( P = 2 \times (length + width) \). - In this case, the perimeter is 200 cm, and the width is 40 cm. - We can use this information to solve for the length of the rectangle.

2. Use the Length and Width to Calculate the Area: - Once we have the length and width of the rectangle, we can use the formula for the area of a rectangle: \( A = length \times width \).

Calculations

1. Calculating the Length of the Rectangle: - Using the formula for the perimeter: \( 200 = 2 \times (x + 40) \) - Solving for 'x': - \( x + 40 = 100 \) - \( x = 100 - 40 \) - \( x = 60 \)

2. Calculating the Area of the Rectangle: - Using the length and width we found: - \( A = 60 \times 40 \) - \( A = 2400 \, cm^2 \)

Therefore, the area of the rectangle is 2400 square centimeters.

[[SOURCE #2]]