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Question

Find the perimeter of a rectangle of length 'a' and breadth 'b'.


A
a + b
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B
ab
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C
2ab
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D
2(a + b)
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Solution

The correct option is C 2(a + b)
Perimeter of a closed figure is the length of its boundary.
For a rectangle of length 'a' and breadth 'b', its perimeter (P) is given by,
P = a + b + a + b
   = 2a + 2b
   = 2(a + b)

So, perimeter of a rectangle of length 'a' and breadth 'b' is given by 2(a + b).

Mathematics

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