Please I need some answers just a few are fine
 
											 
											Answer:
a) 16
b) 36
c) 4
d) 81
Explanation:
Finding the square root of a number is the inverse operation of squaring that number. Remember, the square of a number is that number times itself. The perfect squares are the squares of the whole numbers. The square root of a number, n, written below is the number that gives n when multiplied by itself.