Mathematics
If the length and the breadth of a rectangle are doubled then its area
remains same
becomes half
doubles
becomes four times
Mensuration
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Answer
Let the length = l and the breadth = b.
Original area = l × b
If length and breadth are doubled, new length = 2l and new breadth = 2b.
New area = 2l × 2b
= 4 × (l × b)
= 4 × Original area
Thus, the new area becomes four times the original area.
Hence, option 4 is the correct option.
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