Answer:
36,16,81 and 48
Explanation:
36 = 6^2
16 = 4^2
81 = 9^2
64 = 8^2
Thus, 36,16,81 and 48 are perfect squares
16, 36, 64
4 x 4 =16
6 x 6 = 36
8 x 8 = 64
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