Question

The side of a square field is 70 meter.There is a path of breadth 5 meters on the inner side of the square.find the cost of repairing the path at rupees 15 per square meter.​

Answer 1

Answer:

1070rupees

Step-by-step explanation:

the cost of 1 metre is 15rupees

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Answer 2

Answer:

The cost of reparing the path will be ₹19,500

Step-by-step explanation:

Step 1 : Find the area of ABCD :

Each side of the square ABCD : 70metres (given)

Area of a square : (each side)²

→ (70)²

→ 70*70

→ 4,900m²

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Step 2 : Find the area of PQRS :

Each side of the PQRS will be :

→ 70 - (2*5)

→ 70 - 10

→ 60metres.

Area of the square PQRS :

→ (60)²

→ 60*60

→ 3,600m²

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Step 3 : Find the area of the path :

Area of the path is given by :

→ Area of ABCD - PQRS

→ 4,900 - 3,600

→ 1,300m²

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Step 4 : Find the cost of repairing the path :

Unitary method :

∵ 1m² of repairing costs ₹15

∴ 1,300m² of reparing will amount :

= ₹15 ×1,300

= ₹19,500

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