What is the square root of 0.00000081 ?

What is the square root of 0.00000081 ? Correct Answer 0.0009

শুদ্ধ বানানের শব্দজোড় স্বত্ব, পিপীলিকা। স্বত্ব শব্দের অর্থ মালিকানা আর পিপীলিকা শব্দের অর্থ পিপড়া।
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