Question

square root- solve this question please
2. Today morning I arranged the books in the almirah of my room. In each shelf I arranged booksequal to the number of shelves of almirah. But 5 books remained out of the almirah. If totalnumber of books are 86 Let's find the number of shelves of the almirah. ​

Answer 1

Answer:

9

Step-by-step explanation:

Answer 2

Answer:

The number of shelves = 9

Step-by-step explanation:

[see now 5 books were left so obviously the no. of shelves would be greater than 5 as if it was 5 then no books would have been left]

subtract 5 from 86 so you get the no. of books arranged = 81

now let's take no. of books in each shelf as x and no. of shelves as y

so as y=x { Given }

∴ no. of shelves = y^2     { as x and y are equal so xy = y^2 }

∴ 81 = y^2

∴ $\sqrt{81}$ = $\sqrt{y^2}$

∴  9 = y

hence proved that no. of shelves =9