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laiz [17]
2 years ago
15

A ballroom has a square dance floor. The area of the floor is 400 square feet.

Mathematics
1 answer:
Ilya [14]2 years ago
6 0

It is given in the qustion that

A ballroom has a square dance floor. The area of the floor is 400 square feet.

And the formula of area of square is side 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 side length of 21 feet .

And it is not a perfect square .

And the area is

Area= 21^2 = 441 ft^2

And 441 is a perfect square and a rational number .

Therefore true statements are A and E .

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