The area of a circle is (pi)(r^2). Set this equal to 64 and solve for the radius. r = sqrt(64/pi)
Radius of circle: square root of (64/pi) = 4.5135166683 feet
64 pi
radius = square root of (200.96/pi).
It is: pi*82 = 64*pi square units
The area of a circle is (pi)(r^2). Set this equal to 64 and solve for the radius. r = sqrt(64/pi)
Radius of circle: square root of (64/pi) = 4.5135166683 feet
That will depend on whether the 64 inches is the radius, diameter, or circumference of the circle.
From your question, we can't tell whether [ 64 pi ] is the area of the circleor the sector.The area of a circle is [ pi R2 ].If [ 64 pi ] is the area of the circle, then the radius is [ 8 ], and we don't careabout the sector.If [ 64 pi ] is the area of the sector, then the area of the full circle is [ 256 pi ](because the 90-degree sector is 1/4 of the circle), and the radius is [ 16 ].
64 pi
Area = pi*r2 r = sqrt(area/pi) Radius = sqrt(64/pi) Radius = 4.5 =========
Area = pi * radius * radius radius = diameter / 2 radius = 16/2 = 8 Area = 64 * pi Area 201.062 inches2
radius = square root of (200.96/pi).
Area of circle: pi*8^2 = 64*pi square cm
64 pi square centimeters
The 64 is equal to the radius squared. Therefore, 8 is the radius and the 9 and 3 are the coordinates of the center. Area of a circle is Pi * radius squared. In this case that is 64 times pi. or approximately 201.062
It is: pi*82 = 64*pi square units