How do you find out if an number is a perfect square or not?

Examine both the units digits and the digital roots of perfect squares to help determine whether or not a given number is a perfect square. As we know a perfect square can only end in a 0, 1, 4, 5, 6, or 9; this should allow us to determine whether the first of our numbers is a perfect square.

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(-1,-0.5)

step-by-step explanation:

30 units^2

step-by-step explanation:

area is l × w

the length is 3

and the width is 10

3 × 10= 30 units squared