Simplify: $$4\sqrt{0.000081}$$​​

Correct option is D

Given: ​

​$$4\sqrt{0.000081}$$ 

Solution: 

​$$4 \sqrt{0.000081}$$​​

​$$= 4 \times \sqrt{\frac{9^2}{10^6}}$$​​

​$$= 4 \times \frac{9}{10^3}$$​​

​$$= \frac{36}{1000} = 0.036$$​​