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A cube with 2 mm edge length is cut into two cuboids with equal volume. The surface area of one cuboid is 1______ dm2．
2 × 2 × 8 / 2, = 32 / 2, = 16 (square decimeter), a: the surface area of one of the cuboids is 16 square decimeter
The outer packing box of a color TV is a cuboid, 95 cm long, 60 cm wide and 75 cm high. The packing box covers an area of () square cm?
This color TV box covers an area of (95 * 60 = 5700) square centimeters
If you don't understand, I wish you a happy study!
The packing box of a refrigerator is a rectangle with no bottom. How many square centimetres of cardboard do you need to make the packing box?
We should know the length L, width W and height H
Packing box area = 2H (L + W) + L * W
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- 1. A cuboid outer packing carton is 0.8 meters long, 0.4 meters wide and 0.15 meters high. How many square meters of cardboard should be used to make the carton
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- 5. A cuboid packing box, measured from the inside, with a side length of 0.8 m square at the bottom, 5 m. what is the volume of this packing box/
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- 13. The cuboid water tank with the length, width and height of 50cm, 40cm and 60cm respectively is equipped with two upper water inlet pipes a and B. first open pipe a separately, and then open pipe B after a period of time The two pipes feed water together, and the broken line statistical chart below shows the water inflow situation 60 25 thirty fifteen 0 10 20 30 time (seconds) This is a broken line chart. I didn't draw a line. There should be a connecting line between 15 and 25 (1) After () minutes, both pipes a and B enter water at the same time, and the water depth is () cm (2) A, B two water at the same time, water () ml per minute
- 14. A cuboid wooden box is 60cm long, 50cm wide and 40cm high. This wooden box covers an area of () square centimeters
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