6.28 cm
The circumference of a circle with radius of 10cm is: 62.83 cm
It is half of a circle; the circle's radius (and that of the semicircle) is 10 cm.
The circle's area is 314.159 cm2
10cm
20 cm
20 cm
Radius = diameter/2 = 5 cm
314.2 square cm
A circle with a radius of 10 cm has a circumference of 62.83 cm.
10cm or 0.05meters
The area is 314 cm2
it is half the diameter e.g 10cm diameter = 5 cm radius