Question

Найди периметр и площадь прямоугольника со сторонами: 8см. и 2см. 5мм. Желательно с решением.

Answer 1

Дано:
а=8см=80мм
в=2см 5мм=25мм
р=?см
s=?см2
(80+25)*2=210мм=21см-периметр
80*25=2000мм2=200см2-площадь

Answer 2

Calculation of Perimeter and Area of a Rectangle

To find the perimeter and area of a rectangle, we need to know the lengths of its sides. In this case, the rectangle has sides measuring 8 cm and 2 cm 5 mm.

Converting mm to cm

Before we proceed with the calculations, let's convert the length of 2 cm 5 mm to centimeters. Since 1 cm is equal to 10 mm, we can convert 5 mm to cm by dividing it by 10. Therefore, 2 cm 5 mm is equal to 2 cm + (5 mm / 10) cm = 2 cm + 0.5 cm = 2.5 cm.

Now, we can calculate the perimeter and area of the rectangle.

Perimeter of a Rectangle

The perimeter of a rectangle is the sum of all its sides. In this case, the rectangle has two sides measuring 8 cm and two sides measuring 2.5 cm.

The perimeter can be calculated using the formula: perimeter = 2 * (length + width).

Substituting the given values, we have: perimeter = 2 * (8 cm + 2.5 cm) = 2 * 10.5 cm = 21 cm.

Therefore, the perimeter of the rectangle is 21 cm.

Area of a Rectangle

The area of a rectangle is the product of its length and width. In this case, the rectangle has a length of 8 cm and a width of 2.5 cm.

The area can be calculated using the formula: area = length * width.

Substituting the given values, we have: area = 8 cm * 2.5 cm = 20 cm².

Therefore, the area of the rectangle is 20 cm².