(360/45)*Pi*8*8 = (64/8)*Pi = 8*Pi ~= 25.133
The radius of a circle has no bearing on the angular measure of the arc: the radius can have any positive value.
diameter=2*radius 16 in = 2*radius 8 in = radius
4
3.34 units
Circumference = 2*Ï€*radius = 20*Ï€ feet
The radius of a circle has no bearing on the angular measure of the arc: the radius can have any positive value.
diameter=2*radius 16 in = 2*radius 8 in = radius
radius
radius
4
3.34 units
3.82 units
The radius measures from the center of the circle to the perimeter (outside), so if the radius is 8.5 cm that would make the diameter of the circle 17 cm. (8.5 cm X 2 = 17 cm)
The cross section of a circle is a circle. A circle is defined as a plane figure (i.e. 2 dimensional object) with a constant radius in both dimensions. Since a cross section is, by definition 2 dimensional, a circle's cross section is the circle itself.
4 * pi.
The radius (not raduis) is 8 inches.
Circumference = 2*Ï€*radius = 20*Ï€ feet