Example 1 · level 1
11² = ?
Show solution
- 11² = 11 × 11 = 121.
Answer: 121
CLASS 8 MATHS · SQUARES AND SQUARE ROOTS
Squares and square roots
The square of n is n × n. The square root undoes it: √(n × n) = n.
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Worked examples
Example 2 · level 2
√144 = ?
Show solution
- 12 × 12 = 144, so √144 = 12.
Answer: 12
Example 3 · level 3
√3,600 = ?
Show solution
- 60 × 60 = 3,600, so √3,600 = 60.
Answer: 60