a path 4m wide runs along inside a square park of side 80m .find the area of the path also find the cost of cementing the path at the rate of rupees 350 per 6m square
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Given inner side of square park, s=100 cm
Area of inner square = 100² =10000 cm²
width of path,w = 5 cm
Outer side of square =100+5+5=110 cm
Area of outer square = 110² = 12100 cm²
Area of path =12100−10000=2100 cm²
Cost of cementing at the rate of Rs 250 per 10 sq cm = Rs 250×210= Rs 52500
∴ Cost of cementing a 2100 cm²path =Rs. 52500
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