pi r2 = 3 x 2 pi r
Divide each side by pi r, giving r = 3 x 2 so radius is 6 inches and diameter 12 in.
If the radius of a circle is four inches the diameter, circumference and area are:Diameter = 8 inchesCircumference = 25.13 inchesArea = 50.27 square inches
From Wolfram Alpha: radius | 26/pi inches8.276 inches diameter | 52/pi inches16.55 inches area | 676/pi in^2 (square inches)215.2 in^2 (square inches)
Circumference=(pi)Xdiameter, diameter=Circumference/(pi)=(10in)/(3.14)=3.183in Area=(pi)d2/4=(pi)[Circum/(pi)]2/4=Circum/(4pi)=0.7957~8 square inches.
The area of a circle is (pi x radius squared) A = πr2 The circumference is (pi x diameter) C = π (2r) So if you have the circumference, the area is the circumference squared, divided by 4pi (about 12.566). A = C2/4π Example: A circle with a diameter of 6 inches has a radius of 3 inches Area A = pi (32) or about 28.27 square inches Circumference C = pi (6) or about 18.85 inches Using C2/4pi, the area is 18.85 x 18.85 / 12.566 = about 28.27 square inches
circumference = 30*pi = 94.248 inches rounded to 3 decimal places area = pi*15 squared = 706.858 square inches to 3 decimal places
Circumference = 28.2743339 inches. Area = 63.6172512 square inches.
The circumference and area of a circle with diameter of 12 inches are:C = 37.7 inchesA = 113.1 square inches
circumference about 28.27 inches area about 63.62 square inches
If a circle circumference is 9.5 inches the diameter is 3.024 inches.
If the radius of a circle is four inches the diameter, circumference and area are:Diameter = 8 inchesCircumference = 25.13 inchesArea = 50.27 square inches
The square because its perimeter is 16 inches while the circumference of the circle is 15.708 inches.
you have to quote the diameter or radius or circumference of the circle to calculate the area. If diameter 78.53. If radius 314.15. If circumference 7.95
From Wolfram Alpha: radius | 26/pi inches8.276 inches diameter | 52/pi inches16.55 inches area | 676/pi in^2 (square inches)215.2 in^2 (square inches)
you have to quote the diameter or radius or circumference of the circle to calculate the area. If diameter 78.53. If radius 314.15. If circumference 7.95
All depends what you mean by 18 inches, is that the circumference, the diameter or the radius
Area of circular pan: pi*9 squared = 254.469 square inches Area of square pan: 18*18 = 324 square inches which has the greater area
226.98 inches squared.