circumference of a circle = pi*diameter or 2*pi*radius
Chat with our AI personalities
the circumference of a circle is the length around the outer edge. and you find it by using the formula 2 times pi times the radius of the circle
Rotations and distance tells you about the circumference and this tells you about the diameter. How about a specific problem?
First find the circumference of the whole circle using Pi x diameter. Halve the answer and add the diameter. Thus: 3.1416 × 10 = 31.416 ÷ 2 + 10 = 25.708cm So the perimeter of the semi-circle is 25.7cm
Multiply 22/7 by the diameter of the circle. Or 3.14
Divide the circumference of a circle by pi (approx 3.1416) to find its diameter.