The circumference of a circle is C = 2πr, where C is circumference, π is pi (3.14), and r is radius. C = 2 x 3.14 x 12cm = 75cm = 75/1 cm
circumference = π x diameter ⇒ diameter = circumference ÷ π = 12 cm ÷ π ~= 3.8 cm
C = d x pi 37.68 / 3.14 = d your diameter is 12cm
15cm 12cm
34cm
The circumference of circle with radius 12cm is 75.4cm
The circumference of a circle if the diameter is 12cm is 37.7cm
75.36
12pi cm
The circumference of a circle is C = 2πr, where C is circumference, π is pi (3.14), and r is radius. C = 2 x 3.14 x 12cm = 75cm = 75/1 cm
circumference = π x diameter ⇒ diameter = circumference ÷ π = 12 cm ÷ π ~= 3.8 cm
Circumference: 12*pi = 37.699 cm rounded to three decimal places
Circumference = pi x diameter. So the circumference of a circle with diameter 12 cm = pi x 12 = 37.7 cm (1 decimal place.)
C=3.14D C=12x3.14 C=37.7+12=49.7
using the formula circumference=diameter X pi: circumference=diameter X pi circumference/pi=diamter X pi/pi circumference/pi=diameter therefore, diameter=circumference/pi diameter=12mm/3.14 diameter=3.821mm
C = d x pi 37.68 / 3.14 = d your diameter is 12cm
2(pi)r=2X3.14X3cm=18.85cm to four significant figures