The area of a square plot of land is 1 56 169 m 2 . Find the perimeter of the land.

Area of the square plot of land = 1 56 169 m 2 So, the length of one side of the square plot of land = 1 56 169 m = 225 169 m We have 225 = 15 2 and 169 = 13 2 Now, 225 169 = 15 2 13 2 = 15 13 Perimeter of the square plot of land = 4 × 15 13 = 60 13 m Therefore, the perimeter of the land = 4 8 13 m

Find 17 . 72 correct up to three decimal places.

To find the value of 17 . 72 correct up to three decimal places. Place bars for each pair of digits in whole number part and the pair of digits after decimal point such as 17 . 72 00 00 to find the value of 17 . 72 correct up to three decimal places. Perform division method to find the value of 17 . 72 as follows. 4 . 2 0 9 4 17 . 72 00 00 16 8 2 1 72 1 64 84 0 8 00 0 00 840 9 8 00 00 7 56 81 43 19 Therefore, the value of 17 . 72 up to three decimal places = 4 . 209

If 3969 = 63 , then find the value of 0 . 003969 .

Given that 3969 = 63 , to find the value of 0 . 003969 . We have 0 . 003969 = 3969 1000000 = 3969 100 × 100 × 100 3969 100 × 100 × 100 = 3969 10 2 × 10 2 × 10 2 Now, 3969 10 2 × 10 2 × 10 2 = 63 10 × 10 × 10 = 63 1000 Therefore, 0 . 003969 = 0 . 063

If 3969 = 63 , then find the value of 39 . 69 .

Given that 3969 = 63 , to find the value of 39 . 69 . We have 39 . 69 = 3969 100 = 3969 10 2 Now, 3969 10 2 = 63 10 Therefore, 39 . 69 = 6 . 3

If 3969 = 63 , then find the value of 0 . 3969 .

Given that 3969 = 63 , to find the value of 0 . 3969 . We have 0 . 3969 = 3969 10000 = 3969 100 × 100 3969 100 × 100 = 3969 10 2 × 10 2 Now, 3969 10 2 × 10 2 = 63 10 × 10 = 63 100 Therefore, 0 . 3969 = 0 . 63

Find the cube of the following number: 2 1 5

We have to find the cube of 2 1 5 . The cube of a number is a number multiplied by itself three times. For example: Cube of 2 = 2 3 = 2 × 2 × 2 = 8 Now, Cube of 2 1 5 = 2 1 5 3 = 11 5 3 = 1331 125 Hence, the cube of 2 1 5 = 1331 125 .