. The ratio of length and width of a park is 3:1 is. The perimeter of the park is 320 meters. A path 2 meters wide has been built towards the inner wall of the park. What will be the total cost of road construction at the cost of Rs. 1.50 per square meter?
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Answer:
Step-by-step explanation:
Let the length be : 3x
And, width: x
Perimeter = 320
2(l+w) =320
2(3x + x) =320
2(4x) = 320
4x = 320÷2
4x = 160
x = 160÷4
x = 40
Therefore, length = 3x
= 3×40
= 120m
width = x
= 40
Area of the path = 2 × 120
= 240m sq.
Now , cost of road construction
= 240 ×1.50
= Rs. 360 (ans.)
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