Class : Class 7
Correction to my previous comment - Values were not clear due to bad image on my computer. Ignore the previous comment.
Ans 2:
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 3:
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 4:
Class : Class 8
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 .
Ans 9:
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.