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To find the length of the circumference we would use C = Pi times Diameter, so if we want to find the diameter instead of the circumference we just need to rearrange the formula: D = circumference divided by Pi
1. move the diameter over the = sign and divide by the circumference
So for your example:
D = C divided Pi
D = 4 divided by Pi ( if you can't use a calculator use 3.14)
D = 1.27323....
D = 1.3 to one decimal place
hope this helped
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What is the diameter of a circle with the circumference of three feet?
The ratio between the diameter of a circle and its circumference is constant: π. A circle whose circumference measures 3 feet has a diameter of 3/π feet: approximately 11.459 inches.
What is the circumference of of a circle whose diameter is 1.5 feet?
The circumference of of a circle whose diameter is 1.5 feet is: 4.712 feet (diameter x Pi = circumference).
What is the circumference of a circle whose diameter is 1.5 ft?
The circumference of a circle whose diameter is 1.5 ft is: about 4.712 feet.
Circumference of a circle whose radius is 6 inches?
The circumference of a circle whose radius is 6 inches is: 37.7 inches.
What is the circumference of a circle whose diameter is 2.5 units?
A circle with a diameter of 2.5 units has a circumference of 7.9 units.
