I need the formula for figuring square feet, say a 12 x 25 foot square---Need to know how much paint would be needed?

To convert a foot measurement to a nanometer measurement, multiply the length by the conversion ratio. One foot is equal to 304,800,000 nanometers, so use this simple formula to convert:
1 ft = 304,800,000 nm
nanometers = feet × 304,800,000
The length in nanometers is equal to the feet multiplied by 304,800,000.
For example, here's how to convert 5 feet to nanometers using the formula above. 5' = (5 × 304,800,000) = 1,524,000,000 nm

First figure the area of the circle. The formula is

pi r squared, or

3.14 x (9x9).

Pi = approx 3.14.
Radius of 18' circle is 9'.
Area of circle is 254.34 square feet. To get cubic feet, multiply the area in feet by the depth in feet. In this case, since the depth is only one foot, the cubic feet will be 254.34 cubic feet (254.34 x 1)

If Michael used 5 gallons to cover 1750 square feet, we can calculate how much each gallon covers by taking 1750 and dividing it by 5, which is 350 square feet per gallon.

He has 2,800 square feet to paint, while he has now painted 1, 750 square feet. We have to calculate how much more he needs to paint by subtracting 1,750 from 2,800. I get 1050 square feet to still paint.

We divide this amount 1,050 and divide it by 350 square feet per gallon. I get 3, so we need 3 more gallons. If it was 3 point something, we would have to get an extra gallon to complete the job.

Good luck.

Paul

Figure it out this way, the formula for a round vessel is:
(The formula is for "Feet" so make the proper conversion 1st)
you also need to know that there are 7.5 gallons in a cubic foot

Pi x r2 x depth = cubic feet x 7.5 = total gallons
3.14 x (65" = 5.42' diameter, 2.71' = radius {squared} x 2.71 = 7.34 x 2.75 x 7.5 = 475.36 Gallons

Are you trying to convert 1,500 square feet to linear feet for wood flooring? You will need to know the width of the planks you are going to use in order to complete the formula; so multiply square feet times 12 and divide by the width of the wood (in inches) to get lineal feet.
Add 10% to that figure to compensate for waste cut outs and mistakes

Ceiling paint estimator

Use the following formula to estimate the amount of ceiling paint you need. Double the result if the ceiling requires two coats.
1. Multiply the length of the ceiling times its width to find its area.
14 × 20 = 280 square feet
2. Divide that number by 350 (the estimated square feet covered per gallon) to figure out how many gallons of paint you need.
280 ÷ 350 = .8
For this example, you want to buy 1 gallon of ceiling paint for a single coat.

Wall paint estimator

Use the following formula to estimate the amount of wall paint you need. Double the result if the walls require two coats.

Linear feet are a measure of length (no different from feet); square feet measure area. You cannot simply convert between measures of different kinds of quantities;the connection between them will be specific to a particular problem.A practical example in which this question can arise is in buying countertops for a kitchen. Some materials are sold by the square foot; others (basically those that are extruded, so they come in standard widths) are sold by the linear foot. In order to compare the two, you need to compute the area and wall length for the countertop you want.You can't convert between the two. All you have to do is to make the appropriate measurements so you can calculate the price of each item.The terms used in the lumber industry are a bit confusing.There are two terms that I think you might be mixing up.A LINEAR FOOT is simply the length of a board. If you want to know the area or volume of the board,you need additional information. For instance, 6 linear feet of 1-by-12 has an area of 6 square feet (12 inches = 1 foot, times 6 feet), and it's 1 inch thick, so the volume is 1/2 cubic foot (6 square feet times 1/12 foot). But 6 linear feet of a 1-by-6 board would have half the area and half the volume.A BOARD FOOT is equivalent to one square foot of a 1-inch-thick board. In other words, it is a square-foot-inch (ft^2-in), or 1/12 cubic foot.Linear feet are used for the pricing of a single size such as two-by-fours. Board feet are used for larger lumber that you are more likely to want to compare directly with different size boards .To sum up, neither a linear foot nor a board foot can be converted directly to square feet. A linear foot is a linear (length) measure, and a board foot is a volume measure. You need to know your particular board to do anything more, such as find the area.an example with an" L" shaped countertop will betwo rectangles are 24 by 80 inches and 24 by 36 inches. Thus the area is: 24 * 80 + 24 * 36 = 24 * (80 + 36) = 24 * 116= 2784 sq. in.To get it in square feet, divide by 144:
2784 / 144 = 19.33 sq. ft.The linear measure of this countertop would be 60 + 80 = 140 inches = 140/12 feet = 11.67 feet

The square foot is the smaller unit of area, so you will have to divide a measurement in square feet by the number of square feet per square meter. Since there are 10.76 square feet per square meter, divide by that value.

Obviously, to convert from square meters to square feet, you would multiply by that value.

1 square meter is 10.76391 square feet.

Below is calculation of window glass area :

4.167 ft '------------------------------------'- ' ' ' ' 2.833 ft ' ' '------------------------------------'--
Total area = 4.167 ft x 2.833 ft = 11.81 ft2