SOLUTION: 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
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Question 256213: 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)?
Answer by ankor@dixie-net.com(22740) (Show Source): You can put this solution on YOUR website!
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 =
r = 35 yds
;
:
Check: (2*pi*35) + 2(110) = 439.9 ~ 440
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