Answer:
Let the number of rows be \[x\]. Then the number of columns is \[x\]. So, the number of plants is \[x\times x={{x}^{2}}\] which is a perfect square. Let us find out the square root of 1000 by division method.
This shows that \[{{31}^{2}}<1000\]. Next perfect square number is \[{{32}^{2}}=1024\]. Hence, the minimum number of plants he needs more for this \[=1024-1000=24\]. 31 3 \[\overline{10}\] \[\overline{00}\] ?9 61 100 ?61 39
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