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Question

Question 3

36 unit squares are joined to form a rectangle with the least perimeter. Perimeter of the rectangle is

(a) 12 units
(b) 26 units
(c) 24 units
(d) 36 units

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Solution

Area of rectangle formed = 36 units
We have, 36=6×6
=2×3×2×3
=22×32
=4×9
The figure formed should be rectangle but not square.
Perimeter of the rectangle when the sides of a rectangle are 4 cm and 9 cm.
Perimeter =2(l+b)
=2(4+9)
=2×13
=26 units


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