It is increased nine fold. New Area = 9*old area.
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Area is proportional to the square of the linear dimensions.If diameter is tripled, area increases by a factor of (3)2 = 9 .
the area of the circle will be 1/4 of its original area
The radius of a circle with the area of 36 is 3.385
The area of a circle if the radius is 9m 254.5m2
It quadruples. The area of a circle is Pi (about 3.14159) times the radius squared. So if you double the radius (say from 2m to 4m), you area will change from 4*Pi to 16*Pi (4 times what it was originally).