 and welcome to the session. Let us discuss the following question. The question says the length of the side of a square whose area is 441 meters square. Before proceeding for the solution let's recall the formula of area of a square. The area of a square is equal to side square. So this is the key idea for this question. Now let's see its solution. In question we are given that the area of the square is 441 meters square. So let's write area equal to 441 meters square. Now by the key idea we have that area is side square. So let's replace area by side square. So side square is equal to 441 meter square. Now let's take square root on both the sides. So we will get square root of side square equal to square root of 441 meter. Now that means the square root and square will get cancelled and we will get side on left hand side equal to square root of 441 meters and out the square root of 441 by long division method. We are over every pair of digits starting from one stage that is one. So let's place a bar over 41. Left will also have a bar. So we will place a bar over 4 as well. The number under the left most bar that is 4 as the dividend. So here our first dividend is final number whose square is less than or equal to the dividend that is equal to 4 that is equal to divisor and the coefficient also and 2 times 2 is 4. So subtracting 4 from the dividend we will get the remainder as that is 41 to the right of the remainder and get the new dividend as divisor that is and enter it with a blank on it's right. Now we need to find the largest possible digit to fill in the blank which will also become the new digit in the quotient such that with the new divisor is multiplied to the new quotient the product is less than or equal to the new dividend that is 41. 41 into 1 is equal to 41 which is equal to the dividend. So we will take the digit as 1. So let's write 1 over here and get the new divisor as 41. Also 1 is the new digit in the quotient. So 41 into 1 is equal to 41. So let us subtract 41 from the dividend and we will get the remainder as this the remainder is 0 and there is no bar left in the number therefore square root of 441 is equal to 21. I is equal to the square root of 441. So we will get a required solution and with this we finish this session. Hope you must have