Vedic Maths Trick to find square of any number whose unit digit is 5

Find the area of a square whose side is 5cm.

The ten's digitof a two digit number is three times the unit digit. The sum of the number and the unit digit is 32. Find the number

Find the number of digits 5^(25)

The sum of the digits in unit place of all the numbers formed using the digits 3,4,5,6 without repetitions, the no. of such numbers are

Find the perimeter of a square whose side is 5cm.

If (2^(200)-2^(192).31+2^n) is the perfect square of a natural number , then find the sum of digits of 'n' .

Find the smallest number by which 1152 must be divided so that it becomes a perfect square. Also, find the number whose square is the resulting number.

Is 225 a perfect square ? if so, find the number whose square is 225.

Show that 63504 is perfect square. Also, find the number whose square is 63504.

The number of numbers of 7 digits whose sum of digits is even, is