The area of a circle equals the radius multiplied by itself, multiplied by pi. Pi rounded to the nearest hundredth is 3.14.
If the radius is 10, multiply 10 by 10 and then multiply by 3.14.
The area is 314. (Don't forget to write the units correctly cm2 etc)
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A circle with a radius of 10 metres has an area of 314.16 square metres.
Area of any circle = pi*radius squared
Radius 10, area = 100 pi; radius 9, area = 81 pi
A circle with a radius of 10 meters has an area of 314 square meters.
10 :)