Answer : The perfect squares are, 36, 16, 81 and 64
Step-by-step explanation :
Perfect square : It is a number made by squaring a whole number.
For example:
2 × 2 = 2² = 4
So, 4 is a perfect square.
3 × 3 = 3² = 9
So, 9 is a perfect square.
4 × 4 = 4² = 16
So, 16 is a perfect square.
5 × 5 = 5² = 25
So, 25 is a perfect square.
6 × 6 = 6² = 36
So, 36 is a perfect square.
7 × 7 = 7² = 49
So, 49 is a perfect square.
8 × 8 = 8² = 64
So, 64 is a perfect square.
9 × 9 = 9² = 81
So, 81 is a perfect square.
and so on ............
Hence, from the given numbers we conclude that 36, 16, 81 and 64 are perfect squares.