Was ist der Durchmesser eines Kreises, dessen Umfang 5 ist?

Antworten:

$"diameter "=5/pi~~1.59" to 2 dec. places"$

Erläuterung:

$"the circumference (C) of a circle is"$

$•color(white)(x)C=pidlarrcolor(blue)"d is the diameter"$

$"here "C=5$

$rArrpid=5$

$"divide both sides by "pi$

$(cancel(pi) d)/cancel(pi)=5/pi$

$rArrd=5/pi~~1.59" to 2 dec. places"$