Subject :IMO Class : Class 4

A boy has a square paper sheet. He cuts four identical rectangles from each corner of the sheet. What is the total length of boundary of the remaining part of the sheet?

A 144 cm

B 48 cm

C 72 cm

D 60 cm

How did this happen ?

## Ans 2:

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Class : Class 4

Answer should be 52 that is perimeter

## Ans 3:

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## Ans 11:

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Class : Class 6

But there are more 2 cm lines. The answer should be greater than 48.