A cuboid reservoir is 20 meters long, 12 meters wide and 1.5 meters deep. How many square meters does the reservoir cover? If a tree is planted every 1 meter around the reservoir, at least how many trees should be planted?

Area: 20x12 = 240 square meters
There are 21 trees on each long side, one on each vertex, and 11 on each short side,
At least 2 (21 + 11) = 64 trees should be planted

The floor area of a 10 meter long, 6 meter wide and 2 meter deep rectangular pool is ()

Floor area
=Length × width
=10×6
=60 square meters
A moment forever 523

There is 2100 cubic meters of water in the cuboid reservoir, which is 50 meters long and 20 meters wide. How many meters deep is it?

2100 ／ (50 × 20), = 2100 ／ 1000, = 2.1 (m); answer: the water depth is 2.1 M

A cuboid reservoir covers an area of 80 square meters. There is 200 cubic meters of water in it. The water depth is () meters

A cuboid reservoir covers an area of 80 square meters, with 200 cubic meters of water and a depth of (2.5) meters

A cuboid reservoir, 10 meters long, 5 meters wide and 2 meters deep, uses 3 kg of cement per square meter around and at the bottom of it. How many kg of cement in total

A cuboid reservoir, 10 meters long, 5 meters wide and 2 meters deep, uses 3 kg of cement per square meter around and at the bottom of it. How many kg of cement in total
[(10 + 5) * 2 * 2 + 10 * 5] * 3 = 330 kg
To adopt the correct answer first is to respect the labor of the respondent

A cuboid reservoir is 10 meters long, 5 meters wide and 2 meters deep. How many cubic meters of soil need to be excavated?

Total excavation: 10 × 5 × 2 = 100 (m-179;)

There is a cuboid reservoir, 10 meters long, 4 meters wide and 1.5 meters deep
How many cubic meters of water can this pool dissolve at most?
If cement is applied to his surroundings and bottom, how many square meters is the area of cement applied?

10 × 4 × 1.5 = 60 (M3)
10×4+（10×1.5+4×1.5）×2
=40+42
=82 square meters

Dig a 6 meters long, 5 meters wide, 2.5 meters deep cuboid reservoir, it covers an area of 30 square meters
It's the second question and the third question on page 14 of 1 + 1

Yes, the floor area is the floor area

A cuboid reservoir is 20 meters long, 12 meters wide and 3.5 meters deep. How many liters of water can it store

20 * 12 * 3.5 = 840 cubic meters = 840000 cubic decimeters = 840000 liters

A cuboid reservoir, measured from inside, is 4.5 meters long, 3 meters wide and 1.2 meters deep. How many cubic meters can this reservoir store? There is already 10.8 cubic meters of water in the pool. How deep is the pool?

(1) This reservoir can store water: 4.5 × 3 × 1.2 = 16.2 (M3); answer: this reservoir can store water 16.2 m3. (2) the water depth in the reservoir is: 10.8 △ 4.5 × 3, = 10.8 △ 13.5, = 0.8 (m). Answer: the water depth in the reservoir is 0.8 M

A cuboid reservoir is 20 meters long, 12 meters wide and 1.5 meters deep. How many square meters does the reservoir cover? If a tree is planted every 1 meter around the reservoir, at least how many trees should be planted?