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प्रश्न
The perimeter of a rectangle becomes ______ times its original perimeter, if its length and breadth are doubled.
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उत्तर
The perimeter of a rectangle becomes 2 times its original perimeter, if its length and breadth are doubled.
Explanation:
Perimeter of a rectangle with length l and breadth b = 2(l + b)
If the length and the breadth are doubled, then the new perimeter
= 2(2l + 2b)
= 2[2(l + b)]
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