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Solution :
Q(a) : The side of a square is 41 m . Find the cost of fencing it at a rate of Rs. 23 per meter.
A >
The side of the square is 41 m .
Perimeter of the square :
> 4 × Side
> 4 × 41 m
> 164 m .
The cost is at a rate of Rs. 23 per meter .
Thus , the total cost becomes :
> 164 × 23
> Rs. 3772
Q(b) : Ramesh earns Rs. 36,800 in 16 months . How much does he earn in 5 months ?
A >
Ramesh earns Rs. 36,800 in 16 months.
Earning by Ramesh in 1 month :
> Rs. 36,800/16
> Rs. 2300
Earning by Ramesh in 5 months :
> Rs. 2300 × 5
> Rs. 11500 .
This is the required answer .
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Answer:
a) Given side of the square = 41m
Its perimeter = 4 X side
= 4 X 41
= 164m
Now the cost of fencing 1m = 23rs.
So the cost of fencing 164m = 23 X 164
= 3772 rs.
b) Given in 16 month Ramesh earn 36,800
So Ramesh earns 36,800/16 = 2300 rs. in 1 month
So Ramesh earns 2300 X 5 = 11,500 rs.