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Q.

The card paper of length 80 cm and 40 cm breadth, then how many squares are made from card paper of length 10 cm?


Sub Grade: 10


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a

42

b

32

c

30

d

38 

answer is B.

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Detailed Solution

The length is 40 cm
We know, area = l x b (unit)2 ∴ Area of cardboard = 80x40
 = 3200 cm2 Length of the card paper is 10 cm
And it is of  square shop
We know area of a square is (side)2 unit 2 ∴ area = (10)2 = 100 cm2 ∴ Square can make = 3200/100
= 32 piece
                
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