The square root of 0.81 is
A. 9
B. .09
C. .91
D. .9
D. .9
To find the square root of 0.81, you can use a calculator or perform a series of calculations. Here's the step-by-step method:
1. Start with the number 0.81.
2. Take the square root of 0.81:
√0.81 = 0.9
Therefore, the square root of 0.81 is 0.9.
So the correct answer is D. 0.9