Q: How many bricks in 15 foot diameter patio?

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you would need 12...

12x13/12=13

A 12 x 12 inch brick is 1 square foot. A 20 x 20 (foot) patio is 400 square feet, so you would need 400 bricks.. this assumes you are butting the bricks fairly tight, not leaving large seperations between them, etc...

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64

144

About 240 three inch by eight inch bricks would be need for create a ten foot by four foot patio. It would be preferable to purchase another 24 or 10 percent more for wastage.

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you would need 12...

15

12x13/12=13

A 12 x 12 inch brick is 1 square foot. A 20 x 20 (foot) patio is 400 square feet, so you would need 400 bricks.. this assumes you are butting the bricks fairly tight, not leaving large seperations between them, etc...

I have a 3 and a half foot diameter and want the pit to be 24 in tall. How many fire brick do I need if the bricks are 3 by 7

Here is what they say: To calculate your patio's size in square feet, multiply its length times width. If it is irregular, divide it into sections, calculate each one, and then total them. Or just count the number of squares on your graph paper plan. Here are some other formulas: � Circle patio: Find the area by squaring the radius and multiplying it by 3.1416 � Hexagonal patio: Find the area by squaring the short diameter and multiplying it by .866 � Octagonal patio: Find the area by squaring the short diameter and multiplying it by .828 (Forgetting your seventh grade math? Square a number by multiplying it by itself.) Plan on five bricks per square foot. Multiply your square foot total by five to see how many bricks you will need. Try this link to work out the quantity of bricks required (would calculate the same for vertical or horizontal, just put the overall dimensions in for a single skin brick wall). see links for how to

6 inches is half a foot so it takes four 6 by 6 inch bricks to make one square foot. 348 x 4 = 1392. So you'll need 1392 bricks.

The answer depends on the measurement units used for the pavers.