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a square field has a side 150 m long .There is a road 5 m wide all around the park outside it .Find the cost of constructing the road at 250 rupees per sq metre

User Ruthless
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1 Answer

7 votes

Answer:

Cost to construct the road = 775000 rupees

Explanation:

Square field has a side = 150 m

Area of the field = (Side)²

= (150)²

= 22500 m²

Length of the park with road around the field = 150 + 2×(width of the road)

= 150 + (2×5)

= 160 m

Similarly, width of the park with road around the field = 160 m

Area of the park with road = (Side)²

= (160)²

= 25600 m²

Area of road = Area of the park with road - Area of the park

= 25600 - 22500

= 3100 m²

Since, cost of constructing the road = 250 rupees per square meter

Cost to construct the road with the given area = 250 × 3100

= 775000 rupees

User Felix Ogg
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