Question

Периметр прямоугольника 56 см,ширина 7 см.Чему равна площадь прямоугольника?.

Answer 1

1)56:2-7=21(см)-длина прямоугольника
2)21*7=147(см) квадратных-площадь прямоугольника
Ответ: 147 см

Answer 2

Calculation of Rectangle Area

To find the area of a rectangle, we can use the formula: Area = Length × Width.

Given that the perimeter of the rectangle is 56 cm and the width is 7 cm, we can calculate the length using the perimeter formula: Perimeter = 2 × (Length + Width).

Let's calculate the length first using the given information:

Perimeter = 2 × (Length + Width) 56 = 2 × (Length + 7) 56 = 2 × Length + 14 2 × Length = 56 - 14 2 × Length = 42 Length = 42 / 2 Length = 21 cm

Now that we have the length and width, we can calculate the area:

Area = Length × Width Area = 21 cm × 7 cm Area = 147 cm²

Therefore, the area of the rectangle is 147 square centimeters.

Calculation Steps:

1. Calculate the length using the perimeter formula: Perimeter = 2 × (Length + Width). 2. Substitute the given values: 56 = 2 × (Length + 7). 3. Solve for the length: Length = 21 cm. 4. Calculate the area using the formula: Area = Length × Width. 5. Substitute the values: Area = 21 cm × 7 cm. 6. Calculate the area: Area = 147 cm².

Please let me know if there's anything else I can help you with!