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Question

How many rectangles can be drawn with 32 cm as the perimeter, given that the sides are positive integers in cm?

A
10
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B
10
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C
8
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D
7
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Solution

The correct option is C 8
Perimeter of rectangle =2(l+b)
2(l+b)=32 cm
(l+b)=16 cm
Since length and width are positive integers in centimeters. Therefore, possible dimensions are:
(1,15),(2,14),(3,14),(4,12),(5,11),(6,10),(7,9),(8,8)
So, we have 8 possible rectangles.


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