a gallon of paint will cover about 350 square feet of space. You are painting 3 halls of a school. Ignoring the doors, the halls are 10 feet tall and 125 feet long. You buy 11 gallons of paint. Did you buy enough of paint?

10 * 125 * 3 = 3,750 square feet

3,750 / 350 = 10.71 gallons

To determine if you bought enough paint, you need to calculate the total square footage of the halls and compare it to the coverage provided by the gallons of paint.

First, let's calculate the area of each hall:

The height of each hall is given as 10 feet, and the length is 125 feet.

Hall 1:
Area = height x length
Area = 10 ft x 125 ft
Area = 1250 square feet

Hall 2:
Area = height x length
Area = 10 ft x 125 ft
Area = 1250 square feet

Hall 3:
Area = height x length
Area = 10 ft x 125 ft
Area = 1250 square feet

Now, let's calculate the total square footage of all three halls:

Total square footage = Area of Hall 1 + Area of Hall 2 + Area of Hall 3
Total square footage = 1250 sq ft + 1250 sq ft + 1250 sq ft
Total square footage = 3750 square feet

According to the given information, one gallon of paint covers about 350 square feet of space.

To determine the number of gallons needed to cover the total square footage, we divide the total square footage by the coverage provided by one gallon of paint:

Number of gallons needed = Total square footage / Coverage per gallon
Number of gallons needed = 3750 sq ft / 350 sq ft/gallon
Number of gallons needed ≈ 10.71 gallons

Based on the calculations, you would need approximately 10.71 gallons of paint to cover the three halls. Since you bought 11 gallons of paint, you have bought enough to cover the halls.

To calculate the total square footage of the halls, we need to multiply the height and length of each hall separately and then add them together.

The square footage of one hall = height * length
= 10 feet * 125 feet
= 1250 square feet

Since there are three halls, the total square footage of all the halls is:
Total square footage = 3 halls * 1250 square feet/hall
= 3750 square feet

Given that one gallon of paint can cover approximately 350 square feet, we can determine if you bought enough paint by dividing the total square footage by the coverage of one gallon of paint:

Number of gallons needed = Total square footage / Coverage per gallon
= 3750 square feet / 350 square feet/gallon
≈ 10.71 gallons

Since you bought 11 gallons of paint, which is more than the required 10.71 gallons, you have bought enough paint to cover the halls.