the length of a rectangular field is twice its breadth . A girl jogged around it 4 times and cover a distance of 4.5 km. what is the length of field?
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Answer:
Breadth = 187.5m
lenght = 375m
Step-by-step explanation:
Jog around the rec. field i.e., circumference
circumference of rec. = 2 ( l + b )
4 time = 4.5 km
1 time =1.125 km = 1125m
circumference of rec. = 2( l+ b)
1125 = 2( l + b)
l is double of b (given in question)
1125 = 2 ( 2b + b)
1125 = 2(3b)
1125 = 6b
1125/6 = b
187.5 m = b
2x 187.5 = l i.e., 375m = l
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