Bricks, Masonry, Asphalt and Concrete - I need a little help

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1irishknight
06-13-07, 02:29 PM
I want to use precast blocks and make a round planter for some trees, I cannot find anywhere a calculator to determine the number of blocks I would need, I would like to make a 36" diameter, double stacked, using standard blocks size or 12" x 7" x 4"

any help would be great..

Wirepuller38
06-13-07, 05:36 PM
The circumference of a 36 in. diameter circle is 113 inches. 113 inches divided by 12 inches is 9.4 rounded off to 10 blocks per row.