Math people...how many cubic feet is this area?

[Deleted]

I'm aiming to tackle this project this weekend and need to go to Lowes to get soil, mulch and plants.  I'm trying to estimate how many bags of soil and wood chip mulch I need to buy.  How many cubic feet would you say this area is? 



I can bring everything in a few inches around the edges, I just raked the tree mulch out as far as I could to cover some bare spots in the yard. 

[CrazyLucky]

Well, you didn't give anything for perspective. If the distance between the tree and the edge of the circle is five feet, and you want the mulch to be 2" deep, you need 13 cubic feet.
If the distance is 10 feet, you'd need 52 cubic feet.

[Deleted]

Yes, I realize the photo isn't great, but it's all I have. I would say the circle extends 3-4 feet out from the base of the tree so your estimate of 13 cubic feet is probably about right. How did you calcuate that?

I hate this stuff!

[bikelady]

Area of a circle is pi*r^2, or 3.14x(distance from center to edge of circle)x(distance from center to edge of circle).
So if it's 3.5 feet from the tree to the edge, it's a circle with area 38.5 square feet. To get cubic feet, you need to multiply by the height of the mulch, about 2 inches from the previous poster. So 38.5 x 2/12=6.5 cubit feet of mulch to cover a circle stretching 3.5 feet from the tree.

So. Measure from tree to edge, multiply that by itself, then by 3.14, then by the depth of mulch you want in feet (or in inches divided by 12).

[Deleted]

Pie isn't square. Pie is round. Cornbread is square. ;-P