You wish to paint your room. It's four walls measures 9ft high and 10ft wide. If one gallon of paint covers 120sq. ft, how many gallons of paint will you need?
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What is the volume of my previous question?
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area to be covered = 4(90) or 360 square feet,
assuming your room is square.
number of gallons = 360/120 = 3 gallons
To find out how many gallons of paint you will need, you first need to calculate the total area of the walls. To do this, you multiply the height of each wall by its width and then sum up the areas of all four walls.
Let's calculate the area of one wall:
Height = 9 ft
Width = 10 ft
Area of one wall = Height × Width
= 9 ft × 10 ft
= 90 sq. ft
Since you need to paint all four walls, you multiply the area of one wall by 4 to get the total area of all walls:
Total area = Area of one wall × 4
= 90 sq. ft × 4
= 360 sq. ft
Now that you know the total area of the walls is 360 sq. ft, and one gallon of paint covers 120 sq. ft, you can divide the total area by the coverage of one gallon to find the number of gallons needed:
Number of gallons = Total area / Coverage of one gallon
= 360 sq. ft / 120 sq. ft
= 3 gallons
Therefore, you will need 3 gallons of paint to cover all four walls of your room.