62.8 divided by (4 times 3. 14)=62.8 divided by 12.56=5 (decimeter).
That is to say, higher than 5.
Volume formula: radius times height, that is, bottom area times height. Substitute in the multiplication formula:
Bottom area: 2x3x3.14 =12.56 (square decimeter)
Volume: 12.56x5=62.8 (cubic decimeter)
What a clever question, so here, I attach the solution.
Side area: diameter times 3. 14 times height.
Volume: radius times height times 3. 14.
Because the radius here is 2, the square of the diameter and radius is 4. In other words, the following formulas are all the same. So: the value of lateral area = the value of volume.
Can only be used in this topic, avoid by all means!
2.5m = 25m
Height: 25
Radius: 10
That is: a cylinder with a volume of 1570+a cylinder with a height of 2.5 and a radius of 10.
Substitution formula:10x10x3.14x2.5 = 785 (cubic decimeter)
Addition: 785+ 1570=2355 (cubic decimeter)
3, (cuboid volume+cube volume) divided by the bottom area.
Cuboid volume: 9x7x3= 189 (cubic centimeter)
Cubic volume: 5x5x5= 125 (cubic centimeter)
Addition:189+125 = 314 (cubic centimeter)
Bottom area of cylinder:
Diameter: 20
Radius: 10
10x10x3.14 = 314 (square centimeter)
Height: 3 14 divided by 3 14= 1 (cm)
41.2m = 12 decimeter
The third part adds 2x2=4 faces, so:
Bottom area: 6028 divided by 4= 1507 (square decimeter)
Volume formula: bottom area times height.
Volume:1507x12 =18084 (cubic decimeter)
It's all done. Look at me so tired, I'll give you eight points! ! ! ! ! ! ! ! ! ! ! ! !
It took me n hours to finish it all, so I can have fun. . . . . . . . . . . . . . . . . . . . . . . . . = =
Bad karma . . . . . . . . . . . . . . . . . . . . . . . . . . .
- -
Give more! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! !
The six faces on the first floor are wrong! You can try cutting three. One knife has two sides, just cut two.