Question

2. Масса помидора 140 г, масса огурца 180 г. Купили 9 огурцов и 8 помидоров. Найди массу всей покупки. 3. Найди площадь квадрата, периметр котоn on​

Answer 1

2.)

Дано:

Помидор,огурец-

9 огурцов,по 180 г каждый

8 помидоров, по 140 г каждый

Найти:

массу всей покупки

Решение:

9×180+8×140= 2740 г. масса всей покупки

Answer 2

Here is my answer in detail:

2. The mass of a tomato is 140 g, the mass of a cucumber is 180 g. They bought 9 cucumbers and 8 tomatoes. Find the mass of the whole purchase.

To find the mass of the whole purchase, we need to multiply the mass of each vegetable by the number of vegetables bought, and then add them together. The formula is:

mass of purchase = (mass of tomato) x (number of tomatoes) + (mass of cucumber) x (number of cucumbers)

Plugging in the given values, we get:

mass of purchase = (140 g) x (8) + (180 g) x (9) mass of purchase = 1120 g + 1620 g mass of purchase = 2740 g

Therefore, the mass of the whole purchase is 2740 g.

3. Find the area and perimeter of a square whose side is 5 cm.

The area of a square is equal to the square of its side. The formula is:

area of square = (side of square)^2

The perimeter of a square is equal to four times its side. The formula is:

perimeter of square = 4 x (side of square)

Plugging in the given value, we get:

area of square = (5 cm)^2 area of square = 25 cm^2

perimeter of square = 4 x (5 cm) perimeter of square = 20 cm

Therefore, the area of the square is 25 cm^2 and the perimeter of the square is 20 cm.