Put a certain amount of water into a rectangular glass with a bottom side length of 8 cm, and then put a stone into the water. When the water surface rises by 2 cm, the volume of the stone will increase How many centimeters is the product?

Put a certain amount of water into a rectangular glass with a bottom side length of 8 cm, and then put a stone into the water. When the water surface rises by 2 cm, the volume of the stone will increase How many centimeters is the product?

16b CC

A cuboid empty glass jar without cover, 8 decimeters wide, 9 decimeters high, 3.8 decimeters deep in the jar. How many square meters of glass should be used to make this glass jar
Yongyong puts a fish into the tank, and the water rises by 0. What's the volume of the fish? (the glass thickness is ignored)

（10x9+8x9）x2+10x8 10x8x0.05
=(90+72)x2+80 =80x0.05
=162x2 + 80 = 4 (cubic decimeter)
=324+80
=404 (M2)
A: the glass tank needs 404 square meters of glass at least. The volume of fish is 4 cubic decimeters

A cuboid glass jar, 8 cm long, 6 cm wide, 4 cm high, 2.8 decimeters deep. If you put a square iron block with 4 decimeters long, how many liters of water will overflow from the jar?

If you write the title correctly, it seems that this cube iron can't be put in

One in seven plus x is five in eight
solve equations

27 out of 56

The minimum positive period of the function y = cos (3 π - X / 2) is

T=2π/|ω|=2π/|1/2|=4π

A rectangular conference table is 3 meters long and 2 meters wide. The area of a tablecloth is 1.5 times of the area of the desktop. When it is laid on the desktop, the length of each side of the tablecloth is lower
I'll give you something

Tablecloth area 2 * 3 * 1.5 = 9
Sagging tablecloth area 9 - (2 * 3) = 3
The length of the draped tablecloth is equal to the area of the draped tablecloth divided by the perimeter of the tabletop 3 / ((2 + 3) * 2) = 0.3m

The side area of a cylinder is 37.68 square decimeters, the height is 2 decimeters, and the radius of its bottom is?
fast

Perimeter of bottom surface = 37.68 △ 2 = 18.84 (decimeter)
Bottom diameter = 18.84 △ 3.14 △ 2 = 3 (decimeter)
Bottom radius = 3 △ 2 = 1.5 decimeters
I really appreciate your diligent and inquisitive spirit,
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What are the mathematical symbols

Primary school: +, -, ×, △,
Junior high school: x ^ y (power)
Senior high school: Σ (sum). ㏒, ㏑, Π (multiplication)
University ∫ (points)

What is the differential of y = sin2x + in (1 + x ^ 2),

y=2cos2x+2x/(1+x*2)

Is the conversion rate of gram per cubic millimeter and gram per cubic centimeter 1000?

g/cm³=g/（1000*mm³）
So 1g / mm & sup3; = 1000g / cm & sup3;