National 5; Circle geometry Circle geometry. Arc length is a fraction of circumference. Area of a sector is a fractions of the area of a circle. Both can be calculated using the angle at the ...

The Formula For Perfect Parallel Parking You finally find a spot along the curb, between two hulking SUVs, and it looks pretty tight. Do you go for it or move on? Not to worry; geometry can save you.

DRESS MAKER:'To calculate the circumference of a circle, I need to remember the formula two pi r. As the diameter of my circle is 68cm, the radius will be equal to 34cm.

Forbes contributors publish independent expert analyses and insights. I write about mathematics and its applications The area and perimeter ratios are shown and as n, the number of sides, gets ...