Maths 1.0 / 5 based on 2 ratings ? MathematicsMaths Revision National 5None Created by: Alex17Created on: 13-12-13 20:58 Circumference of a Circle Cherry Pie Delicious; Circumference of a circle= πD 1 of 6 Diameter in a circle A diameter is a chord that passes through the centre of the circle. (Diameter= radius x2) 2 of 6 Radius (Diameter * 2) A radius joins the centre of the circle to any point on the circumference of the circle. 3 of 6 Working Backwards C= πD eg. 18.2= 3.14...xD 18.2÷3.14...=D=5.79= 5.8 TO 1D.P 4 of 6 Area of a circle (Area of a Circle=- Apple Pies Are Too) πr2 eg. πxr2= 3.14... x 52= 78.5cm2 5 of 6 Working Backwards A= πr2 a÷π= r2 R= Square root of A÷π 6 of 6

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