15 units (to 2 dp)
Area of a circle = Pi * radius2
the area of the circle is increased by 400%
The formula for area of a circle is Pi x r (squared), A = Pi(rxr). So since the diameter is 30 you divide it by two and get 15 and then square it and multiply it by pi and get 706.86 meters.
Area of a circle = pi*radius2
Divide the circumference by 2*pi which then will give you the radius and use pi*radius2 to find the area of the circle
If circ is 8pi the radius must be 4 so area is 16pi
2*pi*radius or pi*diameter
It is area
Approx 2011 acres.
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
Divide the arc's degree measure by 360°, then multiply by the circumference of the circle.
The area of a circle with a radius of 15 cm is: 706.9 cm2
The area of the circle: pi*15*15 = 225*pi square measurements
The circle's area is 176.71 square feet.
Using 3.14 as Pi the area of circle is: 176.625
The area is 176.714 units2