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160, 4*4*250 = 5*5*160
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Solution: It takes X blocks to use square bricks with a side length of 5 decimeters to pave them.
4*4=16 (square decimeters).
5*5=25 (square decimeters).
16:25=X:250
16*250=25X
4000=25X
X = 160 answers, 160 pieces are required.
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With so many experts calculating the same result, it seems that there can be no mistake.
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4x4x250 divided by 5x5 is good, equal to 160kuai
Solution: (1) Set up a square brick with a side length of 5 decimeters to pave x blocks, 4 4 250 = 5 5 x, 25x = 4000, x = 4000 25, x = 160, answer: 160 square bricks with a side length of 5 decimeters are used to pave it >>>More
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6*6=36 (square meters) 72*3=216 (square meters) 216 36=6 (blocks).
First, find the total area as 630 times 330 equals 20790
Then since the decorative strip is 15 cm wide bai, du and all four sides have to be pasted, so the length dao should be subtracted from two 15 cm. The width should also be subtracted by two 15 centimeters, and the length obtained after cutting is multiplied by the width to get the area without stickers, that is, 600 times 300 equals 180,000 >>>More