Question

The cost of cultivating a rectangular field at the rate of RS 3 per square m is Rs 1728 . if the breadth of the field 18 m,find the cost of fencing the field at Rs 8.5 per meter.

Answer 1

1738/3 = 579.33
Therefore, Total area = 579.33
Now,
area of ractangle = l×b
579.33 = l × 18
l = 579.33/18
l = 32.18
b= 18
Now,
Perimeter = 2(l+b)
Perimeter = 2(32.18 + 18)
Perimeter = 2× 50.18 = 100.36