Radius = Diameter/2 = 10 cm
The Diameter is the distance from one side of the circle all the way to the other side. The Radius is half the distance in a circle. Simply put: 40cm = Diameter 20cm = Radius (Half the distance) :)
This cannot be properly answered because a 20 cm radius equates to a 40 cm diameter. Also, a 50 cm diameter means a 25 cm radius.
The radius is half of the diameter of a circle.
Diameter of a circle = circumference/pi
A circumference of 62.8cm
Radius = Diameter/2 = 10 cm
Multiply the diameter by pi, which is approximately 3.14.
WOW really? It would be 20cm
A circle with a radius of 10 cm has an area of 314.16 square cm
That depends what you mean with "a 20 cm. circle". If 20 cm. is the radius, you already have the answer. If 20 cm. is the diameter, the radius is half the diameter. (10cm)
The Diameter is the distance from one side of the circle all the way to the other side. The Radius is half the distance in a circle. Simply put: 40cm = Diameter 20cm = Radius (Half the distance) :)
This cannot be properly answered because a 20 cm radius equates to a 40 cm diameter. Also, a 50 cm diameter means a 25 cm radius.
The cord of a circle that contains the center of that circle is a diameter of that circle.
You do a diameter circle!!
A sphere with a diameter of 20 cm has a volume of 4,188.79 cm3
A = 1,257 cm2