Expert: Paul Klarreich - 3/6/2009

Question
The total cost of cultivating a rectangular field at Rs 1.50 per square metre is Rs 1833 .If the breadth of the field is 26 m.find the cost of fencing the field at Rs 7.50 per metre.

Answer
Questioner:   ratu
Category:  Advanced Math
Private:  Yes
 
Subject:  perimeter and area
Question:  The total cost of cultivating a rectangular field at Rs 1.50 per square metre is Rs 1833 .If the breadth of the field is 26 m.find the cost of fencing the field at Rs 7.50 per metre.
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Set up variables:

w = width of field = 26
l = width of field.

The area is 1833/1.5 = 1222,

lw = 1222

l = 1222/w = 1222/26.

So:
1. find l from that.
2. find P = 2l + 2w
3. find cost = 7.5 P

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