fist question:yes
second question:yes because 1x4=4
8 is a multiple and is not a perfect square.
No, 16 is not the only square number that's a multiple of 4.
4
1 square foot is a 1x1 foot square. Now multiple this by 4.
No, 8 is a multiple of 4 and NOT a perfect square.
They are 4, 16, and 36.
36
Please answer
Yes, but you could also be 4 and/or 16.
16, 36
36
It is to 'square' it as for example 2 times 2 = 4