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PRANAV VELDURTI from meridian school madhapur, hyderabad
Subject :IMO    Class : Class 5

Two corners of a napkin are folded as shown. Find the area of the napkin when it is unfolded.



A 60 cm2
B 225 cm2
C 195 cm2
D 450 cm2


Ans 1:

SHRADHA MOHAPATRA from APEEJAY SCHOOL, New Delhi
Class : Class 5
I thought that it's in a square shape...……….that is why I did 15 X 15 not 15 X 13....

Ans 2:

Sohan R Jolapuri from Amanora School, Pune
Class : Class 5
Answer: C Explanation: Add all the numbers given their to find the length. It is 9+2+4=15 Unfold the napkin. you will get a number 9 at the left hand side with some space left. you will get a number 4 on the right hand side with some space left. if you imagine this or look at this carefully, you will notice that the space left at the either sides is actually 4 and 9 respctively. so, to find the breadth, add thesess no.-- 9+4=13. So l=151, b=13. Area is being asked. Formula of calculating area of a rectangle: lXb= 15 X 13 = 195 cm'2 Hence, option C is correct.

Ans 3:

Sohan R Jolapuri from Amanora School, Pune
Class : Class 5
length is 15 and breadth is 13. There was a silly mistake in it.

Ans 4:

TANVI DAS from GAIL DAV Public School , Dibiyapur
Class : Class 8
Thank u Sohan, your answer was very helpful :)

Ans 5:

Krishiv Chandan Sukul from Seven 11 Scholastic School, Mumbai
Class : Class 6
Thanks!

Ans 6:

HARSHIT SOLANKI from Dps, Indore
Class : Class 6
Answer = c

Ans 7:

Shuvangi Das from Vivekananda mission school, haldia
Class : Class 9
Thank-you for giving us the solution

Ans 8:

Aradhya Gavhankar from PICT model school, Pune
Class : Class 5
thANKS FOOR SOLUTION

Ans 9:

tanmay srivastava from DPS Noida, Noida
Class : Class 5
I forgot to attempt this question but when I saw this, it appeared a bit difficult to me, but after calculating, I was sure that the answer is C.

Ans 10:

Ashmi Narkar from The Shishukunj International School, Jhalaria Campus, Indore
Class : Class 9
Thank you for the solution :)

Ans 11:

divish from Delhi Public School, gurgaon
Class : Class 5

Ans 12:

Mathamagician from BGSNPS, Bengaluru
Class : Class 6
thanks. I didn't get the answer at first

Ans 13:

Pratham Dave from GNS, Bangalore
Class : Class 7
C is the answer to this question

Ans 14:

NEEV SINGH from VISHWA BHARATI PUBLIC SCHOOL, Noida
Class : Class 8
answer is c

Ans 15:

Ayush Pal from GD Goenka Public School Dakshineswar, West Bengal, India, Kolkata
Class : Class 8

Ans 16:

Iraj Singh from DPS Megacity, Kolkata
Class : Class 9
Answer should be Option B because in the solution the napkin unfolded looks like a square and a square’s all sides are equal so it’s area should be = 15*15= 225 sq.cm .

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