We know that one wall side is 5m. To find the area of one wall, we do 5²=25m² We know there is 4 walls. So we have to find total area of all four walls. Which is 25×4=100m² To find the total cost of white washing the room, we have to do: 100(total area)×23(cost per m²)=$2300 So the total cost of the area is $2300
20 divided by 10 is 2 so for every 2 miles it travels it uses 1 gallon of gasoline. 20 + 14 is 34 so you divide 14 by 2 to get 7. then you add 10+7 to get 17. it will take 17 gallons of gasoline to go 34 miles
