Question

3.Soil pollution in Maharashtra is 800. By what least number should it be
multiplied to get a perfect square? Also find square root of the new number
thus obtained.

Answer 1

Answer:

1. the least no. by taking the lcm of 800 we get
2. 800=2×2×2×2×2×5×5
3. so each of no has its pair except 2
4. then multiplying the number by 2 we get
5. the number is 1600
6. which is also a perfect square of 40
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Answer 2

Answer:

800×2=

1600

40×40=1600