Question

Numbers like 1,4,9,16,25...... are known as

Answer 1

Answer:

They are square

of 1,2,3,4,5

Answer 2

the 1 ,4 ,9,16 ,25 are called perfect squares /square numbers.

$\huge \red {what \: is \: the \: reason}$

because they have Whole square roots .

or because squares with those areas would have sides that are Whole#'s.