The square root of 6400 is:
A800
B80
C60
D640
Answer & Solution
Correct answer: B. 80
1. 6400 is 64 times 100.
2. Root of 64 is 8 and root of 100 is 10.
3. So the root is 80.
_Source: NCERT Class 8 Mathematics, Chapter 6, Squares and Square Roots._
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