Answer:
It is given in the question that
A ballroom has a square dance floor. The area of the floor is 400 square feet.
And the formula of the area of the square sides square.
So we will get
400= side^2
Taking square root on both sides,
side=20
And on increasing the side length by one foot, we will get the side length of 21 feet.
And it is not a perfect square.
And the area is
Area= 21^2 = 441ft^2
And 441 is a perfect square and a rational number.
Therefore true statements are A and E.
Step-by-step explanation:
^ means squared
