The formula for the circumference (C) of a circle is C = 2πr where r is the radius.
But, the diameter (D) of a circle is twice the radius so this formula can be written C = πD.
C = π x 13 = 40.841 cm (3dp)
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The circumference of 1.5 diameter is: 4.712
Circumference = Pi * diameter
To find the diameter of a circle when given the circumference, you can use the formula: circumference = π * diameter. Given that the circumference is about 46 inches, you can plug this value into the formula: 46 = π * diameter. Solving for diameter, you get diameter ≈ 14.62 inches.
Circumference = Diameter*pi So diameter = Circumference/pi = 32*pi/31 = 32