Answer:
The answer is 58 cm.
Step-by-step explanation:
In order to determine the diameter of a circle, we need to know about the formula of the area of a circle. The area just depends on the radius of circle.
I have attached an image that shows a circle and its formula. Also we have to know that the diameter of a circle is twice its radius.
Then:
R=radius of the circle
D=diameter of the circle
A=area of the circle
[tex]\pi=3.14 \\A=\pi R^2\\841*3.14=3.14*R^2\\841=R^2\\R=\sqrt{841}\\R=29[/tex]
Therefore:
[tex]D=2R\\D=2*29\\D=58[/tex]
Finally, the diameter of the circle is 58 cm.
