Question

________ squares each of side 1 m makes a square of side 5 km.
a) 2,50,00,000
b) 25,00,000
c) 20,50,00,000
d) None of the above

Answer 1

GIVEN :-

A SQUARE OF SIDE 5 KM

TO FIND:-

NO. OF SQUARES OF SIDE 1M TO MAKE UP TO A SIDE OF 5 KM

METHOD USED :-

UNIT SUBDIVISION

SOLUTION:- WE ARE GIVEN OF A SQUARE OF SIDE 1M

NOW WE KNOW, I KM = 1000M

THEN 5 KM = 5000M

AREA ENCLOSED BY ONE SQUARE = (SIDE)^2

AREA ENCLOSED BY SQUARE OF SIDE 5 KM = (5000)M = 2,50,00,000M^2

=> 2,50,00,000M^2 = NO. OF SQUARES

1M^2

=> 2,50,00,000 SQUARES

option (A)

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Answer 2

Answer:

a) 2,50,00,000

Step-by-step explanation:

we know that 1km= 1000m

so 5km will be 5000m

now a square is formed with it by dividing it into 1m small squares.

Thus we can consider the number of squares per side of the big square be 5000m/1m= 5000 ( meter will not be placed here as it gets cancelled off).

Now you only think if you have 5000 rows as well as 5000 columns in a square or a rectangle, the total number of (small) boxes / squares / rectangles, if 1m each of length will be column x row. Thus the answer will be 5000 x 5000 = 2,50,00,000

So the correct answer will be option a, 2,50,00,000.