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Q.

Use the figure showing the layout of a farmhouse:


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A fence is to be enclosed around the house. The dimensions of the house are 18.7 m ×12.6 m. The least length of fencing needed in meters is


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a

62.6

b

63.2

c

65.3

d

69.6 

answer is A.

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Detailed Solution

Given, a fence is to be enclosed around the house.
The dimensions of the house =18.7 m ×12.6 m.
A rectangle's perimeter is defined as the sum of its length and breadth times two.
Mathematically, if l is the length and b is the breadth, the perimeter is given as 2(l+b) .
Now, the total fencing will be the perimeter of the rectangular house with l = 17.7 m and b = 12.6 m.
So, the total length of fencing is,
=2 18.7+12.6 =62.6 m
Therefore, the total length of fencing needed around the house of given dimension is 62.6 m.
Hnec, the correct option is 1.
 
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