Measuring Perimeter (Grade 10 NSC Matric Mathematical Literacy): Flashcards

Total length of outside boundary of a shape

The perimeter of a circle

$P = 2 \times \text{length} + 2 \times \text{width}$

$P = 4 \times \text{length}$

$C = \pi \times \text{diameter}$

Line from centre to edge of circle

Line edge to edge through centre; $d = 2r$

$3.142$

String around circle, then measure string with ruler

mm, cm, m, or km