The width of a cuboid is half of its length, and its length is four times of its height. The total length of its sides is 56cm. How many square cm is its volume?
If the height is 1, the length is 4 and the width is 2
Each piece is: 56 (1 + 4 + 2) = 8 cm
The length is: 4 × 8 △ 4 = 8 cm
The width is 8 △ 2 = 4cm
The height is 8 △ 4 = 2cm
Volume: 8 × 4 × 2 = 64 cm3
A student goes to a city, B city and C City on vacation. He is in this city today and will go to another city tomorrow. If he is in a city on the first day and returns to a city on the fifth day, then his tour route is shared______ There are two different solutions
As shown in the figure below, there are six different routes for him to return to a city on the fifth day: ① a → B → a → B → a, ④ a → C → a → B → a, ② a → B → a → C → a, ⑤ a → C → a → C → a, ③ a → B → C → B → a, ⑥ a → C → B → C → a
There are four groups in a sewing society. Group a can make 8 coats or 10 pairs of trousers every day; group B can make 9 coats or 12 pairs of trousers every day; group C can make 7 coats or 11 pairs of trousers every day; group D can make 6 coats or 7 pairs of trousers every day. How many sets (one coat and one pair of trousers) can the sewing society make in seven days?
The idea of enthusiastic netizens should be correct: pay attention to the efficiency ratio of each group of jacket and pants, and then note that the overall efficiency of jacket is lower than that of pants, so the arrangement idea is jacket / pants: a 8 / 10 B 9 / 12 C 7 / 11 d 6 / 7 d > a > b > c d 7 days all production jacket, C 7 days all production pants
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