Question

What's the positive square root of 0.81?

Answer 1

.9

Answer 2

Thanks honey!

Answer 3

No problem.

Answer 4

one way to do this if you don't want to use a calculator is notice that
0.81 is the same as
\[ \frac{81}{100} \]
to find the square root of a fraction you can find the square root of its top and its bottom, then simplify
\[ \frac{\sqrt{81}}{\sqrt{100}}= \frac{9}{10} \]