Main Answer:
To find out the area of the circle you must square the radius.
Here's the answer:
I took pie as 3.141592
Area = pie x radius squared
A = pie x 13.25 squared --> pie x (13.25 x 13.25)
A = 551.5457455
Don't forget to put the units on (e.g. mm, cm, etc) and round to whatever number of decimal places this question asks for.
Extra Info:
Circumference of a circle = pie x diameter
Area of a circle = pie x radius squared
C herry pie's d elicious --> C = pie x d
A pple pie's r 2 --> A = pie x r2
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The area of a circle of radius 21 is 1386
The area of a circle with a radius of 14.4 is 651.4
Area of a circle = pi*radius squared
A circle with a radius of 135 units has an area of 57,255.53 square units.
If the area of a circle is 40.7 the radius is: about 3.6 (3.599)