The original water does not need to be calculated, and the volume of the sink can be directly calculated.
16×5×8=640 cubic centimeters =0.64 liters
Uncle Zhang wants to dig a fish pond with a length of18m, a width of10m and a depth of1.5m.. How many cubic meters of soil does a * * * have to dig? How many tons of water do you need if you want to inject 1.2m deep water into the fish pond (1 m3 water weight 1 ton)?
The excavated soil is the volume of the fish pond.
18×10×1.5 = 270 cubic meters, and 270 cubic meters of soil will be excavated.
The tonnage of water injection is bottom area × water depth.
18×10×1.2 = 216 cubic meters, 2 16× 1=2 16 tons of water.
I almost forgot the third question.
The first bag of soy sauce 1.00 yuan, 350 ml. The second one is 4.50 yuan, 1000 ml, and the third one is 1.75 liter, which is the cheapest?
350 ml =0.35 liter, the first bag of soy sauce 1.35 ≈ 2.857 yuan per liter.
1000ml = 1L, the second bag of soy sauce is 4.51l = 4.5 yuan.
The third bag of soy sauce is 7.5÷ 1.75≈4.286 yuan per liter.
2.857 & lt4.286 & lt4.5
So the first bag of soy sauce is the cheapest.