Question

The cost of levelling a square lawn at rupees 15 per square metre is rupees 19,935.find the cost of fencing the law at rupees 22 per meter

Answer 1

Hey friend..!! here's your answer
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Cost of square lawn 15 metere square is ₹19,935

Cost of square lawn 1 metere square ,

$= \frac{19935}{15} \\ \\ = Rs\: 1329$

Cost of square lawn 22 metere square = 1329 × 22

= ₹29238

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#Hope its help

Answer 2

let a be the side of square lawn

area of square lawn = a × a = a^2 m^2

First condition :
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cost of levelling 1m^2 = ₹15

cost of levelling a^2 m^2 = 15 × a^2

= ₹ 15a^2

according to question,

cost of levelling square lawn = ₹19935

15a^2 = 19,935

a^2 = 19935 ÷ 15 = 1329

area of square lawn a^2 = 1329 m^2

Second condition:
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since , cost of levelling 1m^2 = ₹22

then ,

cost of levelling 1329 m^2

= 22 × 1329 = ₹29238

Answer:
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cost of fencing the lawn = ₹29238