Area = 1/4*Pi*d2 = 0.25*3.14*282 = about 615.75cm2
Radius = 1/2 of diameter = 4 cm
The circumference = (pai) x diameter = 3.14 x 1 = 3.14 cm
The diameter of a 10 cm wide circle is 10 cm. The diameter is just how wide it is. The radius is 1/2 X diameter. 1/2 X 10cm = 5 cm.
It is approx 39.31 square cm.
Area of a circle = pi R2 R = radius = 1/2 of the diameter Area = pi (3.2)2 = 10.24 pi = 32.1699 square cm(rounded)
Diameter = 1 cm so radius = 1/2 cm Then area = π*r2 = 1/4*π or 0.7854 cm2 (approx)
The radius (radii) of a circle is 1/2 of the diameter. The radius of a circle with a 6.2 cm diameter is 3.1 cm.
The formula to calculate the circumference of a circle is C = πd, where C is the circumference, π is approximately 3.14, and d is the diameter of the circle. If the diameter is 1 cm, then the circumference would be C = π(1) = 3.14 cm.
Area = 1/4*Pi*d2 = 0.25*3.14*282 = about 615.75cm2
6 cm. The radius is 1/2 of the diameter.
Radius = 1/2 of the diameter = 12.5 cm.
Radius = 1/2 of diameter = 4 cm
1 cm
The circumference = (pai) x diameter = 3.14 x 1 = 3.14 cm
Formula for area of a circle is A = pr2r = 1/2d = 12.5cm, p = 3.142A = 3.142 x (12.5cm)2A = 490.9375cm2
Area of a circle = (1/4) x (pi) x (square of the diameter)