Perimeter of a semicircle?
1 Answer
May 11, 2017
Explanation:
"the perimeter (P ) or circumference of a circle is"
color(red)(bar(ul(|color(white)(2/2)color(black)(P=2pir=pid)color(white)(2/2)|)))
"where r is the radius and d is the diameter"
"here it is a semicircle, that is half the circle"
rArr1/2xx2pir=pir" is the perimeter"
"here " d=10rArrr=10/2=5
"the perimeter of this semicircle includes the diameter"
rArrP=(pixx5)+10
color(white)(rArrP)=(3.142xx5)+10
color(white)(rArrP)=15.71+10=25.71" cm"