<PRE><B>Question 256213</B>
A running track has an oval shape with straight sides (box shape) and semicircular ends to create a track.
 If the length of the track is 440yd and the two straight parts (box shape) are each 110yd long,
 what is the radius of the semicircular parts (to the nearest yard)?
:
Find the total circumference of the two half-circles
440 - 2(110) = 220 yds
:
Circumference = 2*pi*r
:
2*pi*r = 220
r = {{{220/(2pi)}}}
r = 35 yds
;
:
Check: (2*pi*35) + 2(110) = 439.9 ~ 440
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