What is the value of \(\sqrt{0.0081}+\sqrt{0.36}\)?
Answer & explanation
Correct answer: option 1
The correct answer is Option (1) → 0.69
The square root of a decimal has half as many decimal places as the number (the number must have an even count of decimal places).
\(0.0081\) has 4 decimal places and \(\sqrt{81}=9\), so \(\sqrt{0.0081}=0.09\)
\(0.36\) has 2 decimal places and \(\sqrt{36}=6\), so \(\sqrt{0.36}=0.6\)
\(0.09+0.6=0.69\)