Question

The area of a circle is 81 pie cm2. What is the radius of this circle??

Answer 1

\[\huge \color{green}{Area = \pi r^2}\]

Answer 2

To find radius use this one:

\[\huge \color{blue}{r = \sqrt{\frac{Area}{\pi}}}\]

\[\huge \color{blue} {\color{red} {\checkmark} Area = 81 \pi}\]

Answer 3

So the answer would be 9. Because 9 squared is 81! 9 x 9=81

Answer 4

Yes dear you are right..