Question

Найди площадь периметр прямоугольника если ширена 4см. длина в 3 раза больше

Answer 1

1) 4х3=12(см)- длина
2) 4х12=48(см)- S-площадь, Прямоугольника

Answer 2

Calculating the Area and Perimeter of a Rectangle

To find the area and perimeter of a rectangle with a width of 4 cm and a length 3 times greater, we can use the following formulas:

Perimeter (P) of a Rectangle: The perimeter of a rectangle is given by the formula: P = 2 * (a + b), where a and b are the length and width of the rectangle.

Area (S) of a Rectangle: The area of a rectangle is given by the formula: S = a * b, where a and b are the length and width of the rectangle.

Calculating the Perimeter

The length of the rectangle is 3 times the width, so the length (a) = 3 * 4 = 12 cm and the width (b) = 4 cm.

Using the formula P = 2 * (a + b), we can calculate the perimeter: P = 2 * (12 + 4) = 2 * 16 = 32 cm.

So, the perimeter of the rectangle is 32 cm.

Calculating the Area

Using the formula S = a * b, we can calculate the area: S = 12 * 4 = 48 cm².

So, the area of the rectangle is 48 cm².

Therefore, the area of the rectangle is 48 cm² and the perimeter is 32 cm.