Question

1.
The cost of levelling a square lawn at * 15 per square metre is 19,935. Find the
cost of fencing the lawn at 22 per metre.
2.
If 2 = 1.414,5 = 2.236 and 3 = 1.732, find the value of:
(i) 572+ J48
(ii)
125
64​

Answer 1

Step-by-step explanation:

Solution :-

Total cost of leveling a square lawn at the rate of Rs. 15 per square meter = Rs. 19935

So, area of the square lawn = Total cost/Cost per square meter

= 19935/15

Area of the square lawn = 1329 sq m

Area of square = Side*Side

So, each side of square lawn = √1329

Each side of square lawn = 36.45 m

Now,

Perimeter of the square lawn = 4*Side

= 4*36.45

Perimeter of the square lawn = 145.8 m

Cost of fencing the square lawn = 22 per meter

Total cost of fencing the square lawn = 145.8*22

Total cost of fencing = Rs . 3207.6