Pi is a constant. It doesn't depend on the size of the circle. Pi is approximately 3.1416.
Assuming the '12 inch' is the radius. Then C = 2 pi r C = 2 pi 12 C = 24 pi ( Thr asnswer in terms of 'pi').
diameter = circumference/pi = 12/pi inches
Circumference of a circle = 2*pi*radius or pi*diameter
Area of the circle: pi*6 squared = 36*pi square inches
36 pi squinches
If the diameter of a circle is 12 inches the circumference is: 37.7 inches (diameter x Pi = circumference).Circumference of a circle is pi x diameter, pi has a value of 3.1415, can you proceed from here, you can do it, try it, Good luck!
Assuming cylinder: volume = area of circle * length area of circle = pi*radius**2 radius = circumference/(2*pi) radius = diameter/2 if 24 inch is circumference: volume = pi*(24/(2*pi))**2 * 12 volume = 144/pi*12 volume = 1728/pi inch**3 if 24 inch is diameter: volume = pi*(24/2)**2 * 12 volume = pi*144*12 volume = pi*1728 inch**3 if 24 inch is radius: volume = pi*24**2 * 12 volume = pi*576*12 volume = pi*6912 inch**3 if 24 in
The perimeter or circumference of a circle is pi x diameter where pi = 3.1416 The circumference of a 12 inch circle is 3.1416 x 12 = 37.699 inches so two 36 inch lengths will be required.
A 12-inch circle has an area of 0.784 square feet.
If the diameter of a circle is 12 inches the circumference is: 37.7 inches (diameter x Pi = circumference).
Area of circle: pi*6 squared = 36*pi square inches
The circumference of a circle is given by Circumference = pi x diameter. The area of a circle is given by Area = pi/4 x diameter2. Thus for a circle with circumference c = 12 in. The area will equal a = 11.459 in2.