Question

Стороны одного прямоугольника равны 12,3 см и 6 см,а стороны другого - 15,7 см и 7 см.Найти,сколько процентов составляет площадь первого прямоугольника от площади второго ,и округлите результат до сотых долей процента. Помогите пожалуйста)

Answer 1

Площадь первого = 12.3*6=73,8 см2

Площать второго = 15,7*7=109,9 см2

Площадь первого составляет 73.8/109,9*100=67,15%

Answer 2

Calculation of the Areas of the Rectangles

To find the percentage of the area of the first rectangle compared to the area of the second rectangle, we first need to calculate the areas of both rectangles.

The formula to calculate the area of a rectangle is A = length × width.

For the first rectangle: - Length = 12.3 cm - Width = 6 cm

Using the formula, we can calculate the area of the first rectangle: A1 = 12.3 cm × 6 cm = 73.8 cm²

For the second rectangle: - Length = 15.7 cm - Width = 7 cm

Using the formula, we can calculate the area of the second rectangle: A2 = 15.7 cm × 7 cm = 109.9 cm²

Calculation of the Percentage

To find the percentage of the area of the first rectangle compared to the area of the second rectangle, we can use the formula:

Percentage = (A1 / A2) × 100

Substituting the values we calculated earlier: Percentage = (73.8 cm² / 109.9 cm²) × 100

Calculating the percentage: Percentage = 0.671 × 100 = 67.1%

Therefore, the area of the first rectangle is approximately 67.1% of the area of the second rectangle.

Please note that the result has been rounded to the nearest hundredth decimal place, as requested.