1010??
Find the arc length of the semicircle.
Either enter an exact answer in terms of \piπpi or use 3.143.143, point, 14 for \piπpi and enter your answer as a decimal.
units
+934 You are missing some information. The arc length requires at least a number to start calculations. The diagrams lacks numbers, but the arc length in the diagram is the radius of the semicircle multiplied by pi.
Hope it helps!
+934 You are missing some information. The arc length requires at least a number to start calculations. The diagrams lacks numbers, but the arc length in the diagram is the radius of the semicircle multiplied by pi.
Hope it helps!
+51 To find the arc length you have to use the following formula:
2*pi*r*(arcmeasure)/360
Let me explain this formula a bit...
2*pi*r, is the circumference of the circle, and we are finding a sector of that.
The sector is the fraction (arcmeasure/360), which is how much it takes up of the circle.
In this case, the arcmeasure is 180, since it's a straight angle, so the following equation would be
2*pi*r*(180/360)
= 2*1/2*pi*r
= pi*r
The radius isn't given, so if it was the arc length of the semicircle would be pi times the radius.
Enjoy!! :) :)
