alleryThe square root of 0.81 is:
A0.09
B0.9
C9
D0.81
Answer & Solution
Correct answer: B. 0.9
0.81 = 81/100, so √0.81 = √81 / √100 = 9 / 10 = 0.9. Verify: 0.9 × 0.9 = 0.81 ✓
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