Question

The cost of levelling a square lawn at ₹15 per square metre is ₹19935. find the cost of fencing the lawn at ₹22 per metre.

Answer 1

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Here is the solution:

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Find the area of the square lawn:

₹15 = 1 m²

₹19935 = 19935 ÷ 15 = 1329 m²

Find the length of the square:

Area = Length²

Length² = 1329

Length = √1329

Length = 36.46 m

Find the perimeter:

Perimeter of a square = 4 x Length

Perimeter = 4 x 36.46 ≈ 146 m

Find the cost of fencing:

1 m = ₹22

146 m = ₹22 x 146 = ₹3212

Answer: The cost of fencing is ₹3212

Answer 2

$\bold {\huge {Solutions :-}}$

Levelling a square lawn at ₹15 per square metre is ₹ 19935

Area of square = 19935/15
= 1329 m²

$\bold {\underline {NOW, }}$

Area of square = side²

=> Side² = 1329

=> Side = √1329

=> Side = 36.46 m


Perimeter =>

Perimeter of a square = 4 × side

Perimeter = 4 × 36.46 = 146 m

Cost of fencing the lawn at ₹22/m
= 22×146
= ₹ 3212



$\bold {\underline {Hence, }}$

The cost of fencing the lawn at ₹22 per metre = ₹ 3212