Stack the cuboid building blocks 3 cm long, 2 cm wide and 1 cm high into the smallest cube. The cube edge length is () cm, and at least () blocks are needed

Stack the cuboid building blocks 3 cm long, 2 cm wide and 1 cm high into the smallest cube. The cube edge length is () cm, and at least () blocks are needed

The least common multiple of 3,2,1 is
3×2×1＝6
So this cube is six centimeters long
At least building blocks are needed
(6 / 3) × (6 / 2) × (6 / 1) = 36 pieces

In a glass fish tank with a length of 50cm, a width of 40cm and a water depth of 20cm, a cube stone with an edge length of 10cm is placed. How many cm does the water in the fish tank rise (the stone is completely submerged)?

(10 × 10 × 10) / (50 × 40), = 1000 ／ 2000, = 0.5 & nbsp; (CM). A: at this time, the water in the fish tank rises by 0.5cm

A 50cm, 40cm wide and 30cm high cylinder has a water depth of 20cm. If a cube with a length of 10cm is put into the cylinder, the water in the cylinder will increase by how many cm

What is the volume of a cube
10 × 10 × 10 = 1000 (CC)
What is the bottom area of the tank
50 × 40 = 2000 (cm2)
The water surface rises
1000 △ 2000 = 0.5 (CM)

A cuboid water tank, measuring 40cm in length, 30cm in width and 30cm in depth from inside, and 10cm in height of water surface in the tank, is placed behind a square iron block with 20cm in edge length
The top of the iron block is still higher than sleep. How many cm is the water at this time?

At this time, the water is high
40x30x(h-10)=20x20xh
1200h-12000=400h
800h=12000
H = 15 cm

A cuboid water tank with a length of 50cm, a width of 50cm and a height of 30cm is used to put water 20cm deep. How many cm can the water surface rise when a cube with an edge length of 10cm is used to put water?

The water surface can be raised by xcm
50*50*x=10*10*10
x=1000/2500=0.4cm
The water surface can be raised by 0.4cm

In a 50 cm long, 40 cm wide and 30 cm high rectangular glass fish tank, the water depth is 20 cm. If a cube with 10 cm edge length is put into the tank, the water depth in the tank is 20 cm
In a 50 cm long, 40 cm wide and 30 cm high rectangular glass fish tank, the water depth is 20 cm. If a cube with 10 cm edge length is put into the tank, how many cm will the water in the tank rise?

10*10*10=1000ml
1000/（50*40）=0.5cm

At the eight vertices of a cuboid whose length, width and height are 5cm, 4cm and 3cm, a cube whose edge length is 1cm is cut off, and the surface area of the object is left
What's the square percent? What's the cubic centimeter? The formula!

The surface area remains unchanged
(5 × 4 + 5 × 3 + 4 × 3) × 2 = 94 (cm2)
The volume is
5 × 4 × 3-1 × 1 × 8 = 52 (cm3)

How much is the surface area of a cuboid (as shown in the figure) made of 8 cuboids with 5cm long edges? If you take away a small cuboid, what is its surface area?
No equation)

(20X10 + 20x5 + 10x5) x2 = 700 (square centimeter) from four angles: 700-5x5x2 = 650 (square centimeter)

What is the surface area of a cuboid made of three cuboids with 5cm edges

The side length of the cuboid is 5cm, 5cm and 15cm
The surface area is 2 (5 * 5 + 5 * 15 + 5 * 15) = 350cm and 178;

How many square centimeters is the surface area of a cuboid made of two cuboids with 5cm edges?
What's the formula

(5×10 5×10 5×5)×2=250