Question

the length of a rectangular field is twice its breadth.meghna jogged around it five times and covered 3km. what is the length of the field

Answer 1

Answer:

200m

Step-by-step explanation:

let the length be 2x

breadth be x

dist covered by meghna = 5(perimeter of the ground)

3km = 5* 2(l+b)

3 = 10(3x)

x = 1/10 km

this implies

breadth of the field is 100 m

length of field = 200m

Answer 2

Answer: 200m

Step-by-step explanation:

l=2b

Perimeter=2(l+b)=3000m/5  (We divide 3000 by 5 because she jogged around it 5 times. To find the length of 1 round i.e., perimeter, we divide it by 5)

=>2(2b+b)=600m

=>2(3b)=600m

=>6b=600m

=>b=100m

=>l=2b=2(100)=200m

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