Question

Срочно!!!!!!!!!!!!!!

Answer 1

1. Длина 20, ширина 20 * 2 / 5 = 8 см. Площадь 20 * 8 = 160см^2

2. 35 * 4 / 7 = 5 * 4 = 20

3. 30 / 2 = 15; 15 * 5 = 75

4. 80 / 4 = 20

5. 2/5 + 3/10 = 4/10 + 3/10 = 7/10; 500 / 10 = 50; 50 * 3 = 150