A reservoir is 30 m long, 15 m wide and 2 m deep. If water of 1.5 m depth is injected into the reservoir, how many cubic meters of water are needed? Please help me, great Xia ~ ~ list the formula ~ ~ ~ thank you ~ ~ ~ it's urgent~~~

A reservoir is 30 m long, 15 m wide and 2 m deep. If water of 1.5 m depth is injected into the reservoir, how many cubic meters of water are needed? Please help me, great Xia ~ ~ list the formula ~ ~ ~ thank you ~ ~ ~ it's urgent~~~

30 × 15 × 2 = 900 (M3) 2 + 1.5 = 3.5 (m) 30 × 15 × 3.5 = 157.5 (M3) should be like this! We also learned this unit! I don't know if the number is right, please check it yourself!

A new cuboid reservoir with a length of 50m, a width of 30m and a depth of 3M has been built in a factory. The water in the reservoir is 40cm away from the opening of the reservoir. How many cubic meters of water is there in the reservoir?

50*30*(3-0.4)=3900

Dig a cuboid reservoir 10m long, 8m wide and 5m deep
Draw a water line at 4m on the inner wall of the pool. How many meters is the total length of the water line?

(10+8)X2=36m

The cuboid reservoir is 40 meters long, 15 meters wide and 2 meters deep. There is 900 meters of water in the reservoir. How far is the water from the mouth of the reservoir

2-900÷（40×15）
=2-900×600
=2-1.5
=0.5m

There is 2280 cubic meters of water in a cuboid reservoir, 570 cubic meters less than the total storage capacity. The reservoir is 40 meters long and 15 meters wide. How many meters deep is it?

(2280+570)/(40*15)
=2850/600
=47.5m

A cuboid reservoir is 20 meters long, 15 meters wide and 11 meters less deep than wide. What is the volume of the reservoir?

20×15×(15-11)
=20×15×4
=1200 (M3)
A: the volume of this reservoir is 1200 cubic meters
You can ask me if you don't understand my answer!
If you have any other questions, you can ask me

Dig a cuboid reservoir, 4.5m in length, 2.4m in width and 1.5m in depth, and put cement on it, so as to ensure the water quality
How many square meters is the area of plastering cement and how many cubic meters is the volume of the pool? (thickness of cement ignored)

Bottom perimeter = 2 × (4.5 + 2.4) = 13.8m
Side area = 13.8 × 1.5 = 20.7 square meters
Bottom area = 4.5 × 2.4 = 10.8 square meters
Therefore, the area to be plastered with cement is 20.7 + 10.8 = 31.5 square meters
Volume of pool = 4.5 × 2.4 × 1.5 = 16.2 cubic meters

A cuboid pool is 8 meters long and 4 meters wide. How many square meters does the pool cover?

Four times eight is 32 square meters

A cuboid pool is 15 meters long and 8 meters wide. The water depth in the pool is 1.2 meters. There is a drain pipe at the bottom of the pool with an inner diameter of 0.2 meters. When the water is discharged, the average flow speed is 2 meters per second. How many minutes does it take to discharge the water in the pool? (π = 3)

The volume of rectangular pool: 15 × 8 × 1.2, = 120 × 1.2, = 144 (cubic meters); the radius of outlet pipe: 0.2 △ 2 = 0.1 (meters); the volume of water discharged per minute: 3 × 0.12 × 2 × 60, = 3 × 0.01 × 120, = 0.03 × 120, = 3.6 (cubic meters); 144 △ 3.6 = 40 (minutes); answer: it takes 40 minutes to discharge the water in the pool

A cylindrical reservoir has a bottom diameter of 6 meters and a height of 2 meters. How large is the area to cement the side and bottom of the reservoir?
24 grams of cement per square meter, how many kilograms of cement do you share?
It's 24 kg per square meter of cement, not 24 g per square meter of cement

The bottom area is: 3.14 × (6 △ 2) &# 178; = 28.26 square meters
The side area is: 3.14 × 6 × 2 = 37.68 square meters
The area plastered with cement is: 28.26 + 37.68 = 65.94 square meters
Cement required: 24 × 65.94 = 1582.56kg
I hope you can make progress in your study!
If you have any questions, please ask. If you have any help, please adopt it. Thank you!