Question

Помогите!!!! Решить всё!!!1.Длинна прямоугольника равна 8 см.Она на 40 мм больше его ширины .найди площадь прямоугольника .2.зааисывай вычисления в строчку :17 ч 48 мир.-5 ч =___ ч __ мин.19 км 075 м + 40 м = __ км ___ м.6 м 77 см - 3 см=__ м __см3.записывай вычисления столбиком :4 ч 35 мин. +2 ч 25 мин.=________________3 руб. 47 коп.+ 1 руб. 88 коп =___________.4.Реши задачу В 40 ящиках было упаковано 640 кг груш. Сколько груш будет упаковано в 52 ящиках,если в каждом будут помещать на 4 кг груш больше?

Answer 1

1.40 мм=4 см

 ширина =8-4=4 см

 площадь=8*4=32 кв см

Answer 2

Задание 1.длина=8, ширина=4 следует S=4×8=32.Ответ:площать 32

Answer 3

Problem 1: Finding the area of a rectangle

To find the area of a rectangle, we need to know its length and width. In this case, we are given that the length of the rectangle is 8 cm, and it is 40 mm (or 4 cm) wider than its width.

Let's denote the width of the rectangle as w. According to the given information, we can write the equation:

Length = Width + 40 mm

Converting 40 mm to cm, we have:

Length = Width + 4 cm

Substituting the given length of 8 cm, we can solve for the width:

8 cm = Width + 4 cm

Width = 8 cm - 4 cm = 4 cm

Now that we know the width of the rectangle is 4 cm, we can calculate its area using the formula:

Area = Length x Width

Area = 8 cm x 4 cm = 32 cm²

Therefore, the area of the rectangle is 32 cm².

Problem 2: Time and distance calculations

Let's solve the given calculations step by step:

1. 17 hours 48 minutes - 5 hours = ? hours ? minutes

To subtract 5 hours from 17 hours 48 minutes, we need to convert the minutes to hours:

17 hours 48 minutes = 17 hours + 48 minutes / 60 = 17 hours + 0.8 hours = 17.8 hours

Now we can subtract 5 hours:

17.8 hours - 5 hours = 12.8 hours

Therefore, the result is 12 hours 48 minutes.

2. 19 km 075 m + 40 m = ? km ? m

To add 40 meters to 19 km 075 m, we need to convert the meters to kilometers:

19 km 075 m = 19 km + 75 m / 1000 = 19 km + 0.075 km = 19.075 km

Now we can add 40 meters:

19.075 km + 40 m = 19.075 km + 0.040 km = 19.115 km

Therefore, the result is 19 km 115 m.

3. **4 hours 35 minutes + 2 hours 25 minutes =