In a circle the area is A=pi*r2 so:
A=pi*72 = pi*49 = 153.9380
So, an approximate value would be 153.94 square units
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Circumference is 2π times the radius. So, for 14π the radius is 7. Area is πr2, so the area of a circle with radius 7 is 72π, or 49π (153.93).
The relationship between a circle's radius and it's area is: a = πr2 so if the radius of the circle increases by 7 times, the area will increase by π72 times, or 49π, which is approximately equal to 153.938
Area of a circle= (22/7)*r^2 where, r is the radius of the circle when r=15, area of the circle= 3.14*15*15 = 706.5 sq.units
A circle with a radius of 7 feet has an area of 153.94 square feet.
153.94 square meters