-
<> as shown in the figure, the surface of the rectangle is composed of 4 4 + 2 18 squares (except for the two sides of the square, the other four sides are composed of four small squares), and the area of a small square from 144 18 8 (square decimeters) is 8 square decimeters.
So the surface area of one small cube is 8 6 48 square decimeters, and the area of four small cubes is 48 4 192 square decimeters.
-
144 18 = 8 square decimeters.
Surface area: 8 6 = 48 square decimeters.
Surface area = (length x width + length x height + width x height) x 2
The two opposite faces of the cuboid are squares, which means width = height, the two squares have equal area, and the 4 rectangles have equal area.
Cut into 4 squares, which means cut 3 times, adding 6 squares, 2 width = length.
Because it can be cut into 4 cubes of equal volume, the bottom surface of the cuboid is a square, and one side is equivalent to 4 bottom surfaces, so the area of one face of the cube = 144 18 = 8dm, so the volume = (root number 8) = 16 root number 2, surface area = 8 6 = 48dm
Or: 144 = 4x+2y
After cutting it into 4 cubes of equal volume, 4x=16y18y=144
Y = 8, the sum of the surface area of these 4 cubes = 6y*4=24y=192 square decimeters.
-
4 4 2 18 pcs., square faces.
144 18 8 square decimeters, an area of a square.
8 6 4 192 square decimeters.
-
1. a...Two people, of course. one...the other ...
。 would like to do sth...Fixed collocation...
。。Got a job as a journalist... as...It is as... The meaning of what it means to be ... with, there is no such meaning.
。would like to do sth...Fixed collocation...
5。 b...Two people. You can only use the comparative... The superlative should be used in at least three ...
。。add ..to...Fixed collocation... Added some... At... Topmost...
-
1 a 2 b 3 b 4 b 5 b 6 b First of all, make sure it's correct.
Explanation:1There are two twins, one is moving baskets, and the other is moving boxes, which is naturally the other (it is singular so choose A).
u like= do u want should be followed by to with, what material to add with, not of
3.He found a job as a reporter, he is a reporter= his job is a reporter= he work as a reporter
4.As with 2, invite someone to use to not for
5.Two people use the comparative level instead of the highest level.
-
Distance Traveled =
Full distance = [5 (5+6)] = = 385 km.
Original = tan70cos10 (tan60tan20-1), tan70cos10 (sin60sin20-cos60cos20) (cos60cos20). >>>More
Because ad bc,ea ad, mbe=45° mbe is an isosceles right triangle, so be = me and because bae= mce, aeb = mec = 90° so abe mce >>>More
The two numbers add up to 4, and their absolute values add up to 7, so the two numbers have different signs. And the number with the largest absolute value is positive. >>>More
Use the discriminant method.
y=(mx^2+4√3x+n)/(x^2+1)m-y)x^2+4√3x+n-y=0 >>>More
Learn to analyze and write the substances obtained by the reaction step by step. Of course, the premise is that you are familiar with the reaction principle. In this question, sodium aluminum is placed in water, sodium first reacts to produce sodium hydroxide, when sodium hydroxide is generated, aluminum begins to dissolve to produce H2, and sodium metaaluminate is generated, because the question tells you that there is OH-remainder, that is, you are told that the aluminum reaction is finished, at this time the composition of the solution is sodium hydroxide and sodium metaaluminate, and then add hydrochloric acid to the solution, hydrochloric acid first reacts with sodium hydroxide, and then reacts with sodium metaaluminate to form a precipitate, and the maximum amount of precipitation indicates that the sodium metaaluminate reaction is just completed at this time, and there is only sodium chloride and water in the solution. >>>More