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guys, i need help. I cannot figure out how many square feet are in a circle that's 15ft across. could someone please explain the formula?

 Apr 28, 2022

Best Answer 

 #1
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Area of a circle = pi*r^2          (*)

 

they give you the diameter of the circle so using the relationship btwn diameter, d, and radius, r ---> r = d/2

thus the radius of this particular circle is 15/2.

 

Now plugging the values into equation (*), A = pi*(15/2)^2 -----> A = 225pi/4

 Apr 28, 2022
 #1
avatar+9 
+1
Best Answer

Area of a circle = pi*r^2          (*)

 

they give you the diameter of the circle so using the relationship btwn diameter, d, and radius, r ---> r = d/2

thus the radius of this particular circle is 15/2.

 

Now plugging the values into equation (*), A = pi*(15/2)^2 -----> A = 225pi/4

SecretSquirrel3 Apr 28, 2022

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