Answer: 1) Third option is correct.
2) Second option is correct.
Step-by-step explanation:
1) Since we have given that
![\sqrt{0.0064}](https://tex.z-dn.net/?f=%5Csqrt%7B0.0064%7D)
We need to find all the real square roots.
First we will write it in the following way:
![\sqrt{0.0064}\\\\=\sqrt{\frac{64}{10000}}\\\\=\frac{\sqrt{64}}\sqrt{10000}}\\\\=\pm\frac{8}{100}\\\\=\pm 0.08\\\\=0.08,-0.08](https://tex.z-dn.net/?f=%5Csqrt%7B0.0064%7D%5C%5C%5C%5C%3D%5Csqrt%7B%5Cfrac%7B64%7D%7B10000%7D%7D%5C%5C%5C%5C%3D%5Cfrac%7B%5Csqrt%7B64%7D%7D%5Csqrt%7B10000%7D%7D%5C%5C%5C%5C%3D%5Cpm%5Cfrac%7B8%7D%7B100%7D%5C%5C%5C%5C%3D%5Cpm%200.08%5C%5C%5C%5C%3D0.08%2C-0.08)
Hence, the real square roots of 0.0064 are 0.08 and -0.08.
Hence, Third option is correct.
2) The real number root will be of 1.1 as it is the only positive number among the options for the real number root.
![\sqrt{1.1}=1.048](https://tex.z-dn.net/?f=%5Csqrt%7B1.1%7D%3D1.048)
So, Second option is correct.