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Subject :IMO    Class : Class 7

How many different rectangles, with natural numbers as side lengths, can be constructed so that the perimeter of each rectangle is 16?

A4
B6
C7
D9


B should be right answer

Ans 1:

Class : Class 10
The answer is option A because the rectangles formed will be of length 1 and 7, 2 and 6, 3 and 5, 4 and 4. Since the sum of these is 8 and perimeter=2(l+b) thus 2(8) = 16

Ans 2:

Class : Class 8
The answer is option A ,4 as all squares are rectangle because all sides are parallel

Ans 3:

Class : Class 7
B is the right answer

Ans 4:

Class : Class 8
But 4 and 4 is a square

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