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how much 1" rock will I need to fill in a hole 20' long, 2' wide' and about 2' deep
For a hole 36" deep X 18" diameter, you would need approx. 1/5 cu. yd. concrete.
Well assuming the depth of concrete is going to be 1 meter you will need 846 cubic meters of concrete.
You will need 1.31 cubic feet for a cylinder that is 3' wide x 5' tall.
As you did not specify a depth, I can not provide an answer.
about 432 cubic inches
None, as a hole which is 6 inches wide and 42 inches long has no depth and thus no volume.
how much 1" rock will I need to fill in a hole 20' long, 2' wide' and about 2' deep
Depends on the size hole you need to make and what you need to do with it. If you need to make a large hole in concrete, or totally destroy the concrete, use a jack hammer or even a sledge hammer. Or you could use a drill to drill a small hole in concrete if you need to install a fastener of some type. You can rent special drills with diamond heads at most hardware stores if you just need it for a short period of time.
40x68x36=97,920 in.^3 1728in.^3 per 1ft^3 in volume 97920/1728=56.7 ft^3 of concrete in volume 27ft^3 per 1 Yd^3 in volume 56.7/27=2.1 yd^3 of concrete to fill the hole You can not order exactly 2.1 yards of concrete though. I think they only go up by half yard increments.
112 cuft
The fill hole is the dipstick hole itself. You usually need a long funnel to get fluid into it, and it's slow to fill because of this.
For a hole 36" deep X 18" diameter, you would need approx. 1/5 cu. yd. concrete.
About 21 cubic feet
2 inches = 1/6 foot27 cubic feet = 1 cubic yardVolume of the hole = (15' x 7' x 1/6-ft) = 17.5 cubic feet = 0.648 cubic yard (rounded)
They don't have one! They have a drain plug at the bottom and a fill hole on the side. You need to fill to the bottom of the fill hole.
that is a hard one. You will probly need a hole in the concrete with a drill or something. Or dynimite.