The circumfrence; Pi (or 3.14) times the width across the circle :)
3,848.45mm2.
the diameter is the length across the circle, the area is pie r squared r is radius, which is half of the diameter
804.25 square cm
254.34 cm squared.
615.75 square inches.
A circle with an 18-foot diameter has an area of: 254.5 square feet.
The area of a circle = (pi)*r^2 pi = 3.14 r = 9.5/2 = 4.75 r^2 =22.56 area of the circle = (3.14)*(22.56) = 76.7
yes half of that line is called the radius (used to calculate the area of a circle)
660.52 square feet
Area of the circle: pi*20 squared = 400*pi square feet
diameter refers to the area across a circle through its center. it is the longest chord possible for any given circle.