remember the formula for circumference -> pi x d where pi is our favorite number in math i.e. 3.14159.... and d is the diameter. So your answer would be
3.14159 x 31 = 97.39 (rounded to decimal places) but your 31 should also have a unit of length with it.
31 feet 5 inches
Circumference is Pi x Diameter so do Circumference divided by Pi to get the diameter :)
diameter = circumference/pi
circumference = diameter * pi. Therefore, diameter = circumference ÷ pi.
Circumference = pi*diameter So diameter = circumference/pi = 1.59 units
Circumference = Diameter*pi So diameter = Circumference/pi = 32*pi/31 = 32
31x3.1416=circumference
Circumference of circle: 31*pi = 97.389 inches rounded to 3 decimal places
The circumference of a circle with a 31 foot diameter is 97.4 feet, approx.
31 feet 5 inches
Circumference is Pi x Diameter so do Circumference divided by Pi to get the diameter :)
Circumference is pi times diameter. Diameter is circumference divided by pi. Diameter is twice the radius. Radius is half the diameter.
Diameter = Circumference/pi
diameter = circumference/pi
Since the circumference is Pi times the diameter then divide the circumference by Pi (3.14159) to get the diameter
The circumference of a 13.5 diameter circle is: 42.41(diameter x pi = circumference).
Circumference = diameter(pi) so divide the circumference by pi to get the diameter.