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प्रश्न
The perimeter of a square is 60 m, find:
(i) its each side its area
(ii) its new area obtained on increasing
(iii) each of its sides by 2 m.
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उत्तर
Perimeter of a square = 60 m
(i) Perimeter of a square = 4 x side
60 m = 4 x side
`60/4` = side 4
∴side = 15 m
(ii) Area of square = (side)² = (15 m)²
= 15 m x 15 m
= 225 m²
(iii) Increased each side = 2 m
Side of square = 15 m
New length of side = (2m + 15m)
= 17m
∴ New Area of square = (17m)² = 17m x 17m = 289 m2
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