The length of a rectangular field is twice its breadth. Meghna jogged around it 5 times and covered a distance of 3 km. What is the length of the field ?

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Solution

Perimeter
= 2(b+2b)
= 2(3b)
= 6b
5 rounds = 5 $\times$ 6b
= 30 b
Given: 5 rounds = 30b = 3km
= 3000 m
$b = \frac{3000}{30} = 100 m$
l = 2b = 200 m

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The length of a rectangular field is twice its breadth. Meghna jogged around it 5 times and covered a distance of 3 km. What is the length of the field ?

Perimeter = 2(b+2b) = 2(3b) = 6b 5 rounds = 5 × 6b = 30 b Given: 5 rounds = 30b = 3km = 3000 m b=300030=100 m l = 2b = 200 m

Perimeter
= 2(b+2b)
= 2(3b)
= 6b
5 rounds = 5 $\times$ 6b
= 30 b
Given: 5 rounds = 30b = 3km
= 3000 m
$b = \frac{3000}{30} = 100 m$
l = 2b = 200 m