Question
how can i find the perimeter of a semi circular flower bed of diameter 20m?
Answers
bobpursley
The perimeter of a circle is PI*diameter.
Half that is PI*diameter/2
Now add the straigh edge, diameter.
Viola, you have it.
Half that is PI*diameter/2
Now add the straigh edge, diameter.
Viola, you have it.
help
what do u mean add the straight edge im still a bit confused
Ms. Sue
The formula for circumference (perimeter) of a circle is
C = pi * diameter
C = 3.14 * 20
C = 62.8 m
For a semicircle's perimeter, divide the circumference in half and add 20.
C = pi * diameter
C = 3.14 * 20
C = 62.8 m
For a semicircle's perimeter, divide the circumference in half and add 20.
Ms. Sue
A semicircle has a straight edge.
http://mathworld.wolfram.com/Semicircle.html
http://mathworld.wolfram.com/Semicircle.html
help
i get it now