Addition of perfect square/cube to get the next one

Perfect cube

By what least number should 6300 be divided to get a perfect square number ? Find the number whose square is the new number.

Find the probability of getting the product of a perfect square (square of a natural number), when two dice are thrown together.

A die is thrown for times .The probability of getting perfect square in at least one throw is

A die is thrown four times. The probality of getting perfect square in at least one throw is

Is 243 a perfect cube?

Is 196 a perfect cube?

Is 256 a perfect cube?

Is 256 a perfect cube?

is 1296 a perfect cube or not ?