A US 5 cent coin (a nickel) has a diameter of 21.21 mm -. That is 2.121 cm
There are 100cm in 1m.
The circumference of a circle of radius r cm is 2*pi*r cm so the length of the semi-circular arc is pi*r cm. The length of the diameter is 2*r cm so the total length is (pi + 2)*r cm
Area = pi*r^2 r(radius) = diameter/2 24 cm/2 = 12 cm radius Area = pi(12 cm)^2 ~ 452 sq cm
The area of a circle with radius r is pi*r*r where pi = 3.1416 approx. When r = 6 cm, the area is 113.1 sq cm.
A US 5 cent coin (a nickel) has a diameter of 21.21 mm -. That is 2.121 cm
C = 2pir (substitute 40pi cm for C) 40pi cm = 2pir (divide by 2pi to both sides) 20 cm = r = 200 mm (since 1 cm = 10 mm)
C = 2 pi r (divide by 2pi to both sides) C/2pi = r (substitute 13 pi cm for C) r = (13 pi cm)/(2 pi) = (13/2)(pi/pi) cm = 6.5 cm
r = 2.07 cm
r u seriously asking this? wow, okay well its 25.3 cm.... there is 10 mm in each cm so take ur # and divide by 10. so again, 25.3 cm
2.5
There are about 12 inches in 30 cm
There are 100cm in 1m.
There r ten cm in a mm and I am terrible at the metric system but not as bad as u r!!
18m=18000mm i belive :)
13
The circumference of a circle of radius r cm is 2*pi*r cm so the length of the semi-circular arc is pi*r cm. The length of the diameter is 2*r cm so the total length is (pi + 2)*r cm