Measurement
Circumference of a circle

Measurement

• Perimeter
• Converting length units
• Circumference of a circle
• Arc length
• Converting area units
• Area of squares and rectangles
• Area of triangles
• Area of parallelograms
• Area of trapezia
• Area of kites
• Area of a circle
• Area of semi and quarter circles
• Area of sector circles
• Area of composite shapes
• Surface area of basic solids

The perimeter of a circle is known as the circumference. There is a relationship between the circumference of a circle and it's diameter, where the circumference of the circle is pi times larger than the diameter. Therefor, if the diameter of the circle is known, then the circumference of a circle is found by multiplying the diameter by pi.