Найди площади прямоугольников, если: а = 254 м b = 7 м а = 47 см a = 79 мм

Modern facilities are found in almost all homes. 
2. In our house in the village there is no Central heating , but there is a fireplace. 
3. To have electricity at home 
it is very important. 
4. Your house has hot water?
"Yes, of course. 
5. I often use the vacuum cleaner, cleaning the house. 
6. You have a washing machine?
"no, but we're going to buy it. 
7. In summer, Central heating off in all homes.