Question

Solve this question of 20 marks. ​

Answer 1

Step-by-step explanation:

cost of levelling the square= 19935

cost of levelling it per meter= 15

cost of levelling the square= cost of levellin it per meter × area

19935= 15× area

area=19935÷15 =1329

area=1329

area of a square =side ×side or s^2

s^2=1329 ( taking root of 1329)

s= 36.455 or 36.46

permieter of a square = 4×side

=4×36.46=145.84

we can take any either 36.455 or 36.46

cost of fencing the lawn at 22 per meter = 145.84×22= 3208.48

so, ans is rupees 3208.48

Answer 2

Answer:

3208

Step-by-step explanation:

The cost of levelling a square lawn at Rs.15 per square meter is Rs.19,935. Find the cost of fencing the lawn at Rs.22 per meter.

ANSWER

Cost of levelling =Rs.15 per square meter

Let A be the area of lawn.

Therefore,

Cost of levelling lawn =15×A=Rs.19,935(Given)

⇒A= 19935/15 =1329m ^2

As we know that,

Area of square =a ^2

Here a is the edge length of square.

Since, lawn is in square form.

Therefore,

Side length of square (a)= √A = √1329

=36.45m

Perimeter of square =4a=4×36.45=145.82m

Now,

Cost of fencing =Rs.22 per meter

Therefore,

Cost of fencing lawn =22×145.82 = Rs.3208

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