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
To fill a 2'x2'x4' square hole, you first calculate the volume in cubic feet. The volume is 2 ft x 2 ft x 4 ft = 16 cubic feet. Therefore, you would need 16 cubic feet of concrete to fill the hole. If you need to convert this to cubic yards, it would be approximately 0.59 cubic yards, since there are 27 cubic feet in a cubic yard.
To determine the amount of concrete needed for a fence post installation, you should calculate the volume of the hole and then use a standard ratio of 1:2:3 (cement, sand, aggregate) to mix the concrete. Typically, a 50-pound bag of concrete mix will fill approximately 0.375 cubic feet. So, for example, if your hole is 2 feet deep and has a diameter of 8 inches, you would need about 0.25 cubic feet of concrete per post.
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.
To determine how much sand is needed to fill a hole that measures 8 feet long, 8 feet wide, and 3 feet deep, you can calculate the volume of the hole by multiplying the dimensions: 8 x 8 x 3 = 192 cubic feet. Therefore, you would need 192 cubic feet of sand to fill the hole completely.
About 21 cubic feet