Question

Стороны прямоугольника равны 12 дм и 80 см.Найдите его периметр и площадь?

Answer 1

1) 2( 12 + 8 ) = 40 ( дм ) периметр
2) 12 • 8 = 96 ( кв дм ) площадь

Answer 2

S= 120×80=9600 (см2)
P= (120+80)×2=400 (см)

Answer 3

Given Information:

The sides of the rectangle are given as 12 dm and 80 cm.

Calculating the Perimeter:

The perimeter of a rectangle is the sum of all its sides. To find the perimeter, we add the lengths of the two adjacent sides and multiply the sum by 2.

Let's calculate the perimeter of the rectangle: P = 2 * (a + b)

Given that one side is 12 dm and the other side is 80 cm, we need to convert the measurements to the same unit before calculating the perimeter.

1 decimeter (dm) = 10 centimeters (cm)

Converting 12 dm to cm: 12 dm * 10 cm/dm = 120 cm

Now we can calculate the perimeter: P = 2 * (120 cm + 80 cm) P = 2 * 200 cm P = 400 cm

Therefore, the perimeter of the rectangle is 400 cm.

Calculating the Area:

The area of a rectangle is given by the product of its length and width. To find the area, we multiply the lengths of the two adjacent sides.

Let's calculate the area of the rectangle: A = a * b

Given that one side is 12 dm and the other side is 80 cm, we need to convert the measurements to the same unit before calculating the area.

Converting 12 dm to cm: 12 dm * 10 cm/dm = 120 cm

Now we can calculate the area: A = 120 cm * 80 cm A = 9600 cm^2

Therefore, the area of the rectangle is 9600 cm^2.