a 400 metre running track has two straight sections each of length 120 metres and two semicirculars ends. calculate the total length of the c2urved sections of the track.
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Total length of the straight sections = 120 m + 120 m = 240 meters
Total length of the track = 400 meters
total Length of curved sections = 400 - 240 = 160 meters
Let the radius of the semicircular arcs be R.
Their total length will be = π R + π R = 2 π R
=> 2 π R = 160 m
=> R = 80/π = 25.46 meters
Total length of the track = 400 meters
total Length of curved sections = 400 - 240 = 160 meters
Let the radius of the semicircular arcs be R.
Their total length will be = π R + π R = 2 π R
=> 2 π R = 160 m
=> R = 80/π = 25.46 meters
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Answer:
A track for a 400m is made up of 2 straight lines each 101 meters long ending with a semi circular ends of equal diameter find length of the diameter
Step-by-step explanation:
c = 2*22/7*r
now 400-202=198
44 / 7r=198
r = 99x7/22
r=693/22=31.5
D=2*r
31.5x2= 63 cm
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