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It depends on whether you mean 28 mm x 28 mm x 3 mm or 28 metres x 28 metres x 3 metres or some other units.

Maybe the answer should be 27 and let you figure out 27 lots of what.

Q: How much cement needed for 28 x 28 x 3?

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9 metre2

You already have the amount of cement you need 75lbs so that is your 3 parts cement. 25 + 25 + 25 =75. Now add the 2 parts sand 25 + 25 = 50lbs. --------------------------------------------------------------------------------------------- Find fractional parts. There is a total of 5 parts. 2/5 = .4 is the fractional part of sand and 3/5= .6 is the fractional part of cement. Then .4 x 75 = 30lb is the sand and .6 x 75 = 45lb is the cement. This gives 75lbs of concrete. If you are asking how much sand to add to 75lbs cement the top answer is correct.

Concrete is a mixture of sand, gravel, cement, and water. Generally, you have 1 part cement, 2 parts sand, and 3 parts gravel. Sand makes up about 1/4 or 1/3 of a cubic foot. At 100 pounds per cu ft that is about 25-35 pounds.

how much fencing will be needed to fence a property 6.5 meters long and 3 meters wide?

Related questions

About 8m^3

13 1/3 cubic yards

according to my books you will need at least 50 bags of 60lbs of cement maybe more but less than 80 bags

1 cement 2 sand 3 gravel

An Average of 2400 kg, with a ratio of 1:3 Cement and Sand

3

Approximately 5bags of cement are in 1 cu.m concrete ratio 1:3:6 with 20mm aggregate, water-cement ratio 0.5.

9 metre2

You already have the amount of cement you need 75lbs so that is your 3 parts cement. 25 + 25 + 25 =75. Now add the 2 parts sand 25 + 25 = 50lbs. --------------------------------------------------------------------------------------------- Find fractional parts. There is a total of 5 parts. 2/5 = .4 is the fractional part of sand and 3/5= .6 is the fractional part of cement. Then .4 x 75 = 30lb is the sand and .6 x 75 = 45lb is the cement. This gives 75lbs of concrete. If you are asking how much sand to add to 75lbs cement the top answer is correct.

Typically you would need about 30% more type I cement to attain the same early strength gain as Type III cement.

62 lbs

Concrete is a mixture of sand, gravel, cement, and water. Generally, you have 1 part cement, 2 parts sand, and 3 parts gravel. Sand makes up about 1/4 or 1/3 of a cubic foot. At 100 pounds per cu ft that is about 25-35 pounds.