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- Calculate the circumference of the column. 5 x 3.1416 = 15.708
- Multiply the Circumference by the Height of the column. 15.708 x 25 = 392.7 SF
- Multiply the SF by $1.25 392.7 x 1.25 = 490.88
- Multiply the cost to paint one column by 10 (How many Columns) $490.88 x 10 = $4908.80
Example:
A painter charges by the square foot and needs to determine the Area of a Column that is 25' tall and 5' in diameter. He will charge $1.25 per square foot.
There are 10 columns total.
Example:
Calculate the Linear Feet around a circle that has a 12' diameter.
12 x 3.1416 = 37.6992'
Example:
Calculate Cubic Feet (Volume) in a cone with 5' radius that is 14' tall
1.0472 x 5 x 5 x 14 = 366.52
Example:
Calculate Cubic Feet (Volume) in a pyramid with dimensions of 10' x 10' with 14' height.
10 x 10 x 14 = 1400
1400 รท 3 = 366.52
Example:
Calculate Cubic Feet (Volume) in a tank that is 20' Tall with an 8' Diameter.
.7854 x 8 x 8 x 20 = 1005.312
NOTE: To convert to square yards, divide by 9. For Cubic yards divide by 27.
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