It's the square root of the sum 18 feet squared plus 18 feet squared. 18 feet squared is 324 square feet. 2 x 324 square feet = 648 square feet. The square root of 648 square feet is about 25.46 feet.
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No one answer, since it depends on the shape of the 400 square foot figure. If it is a square 20x20, then the diagonal is about 28.25 ft.
Ah, the diagonal of a square is a special thing indeed. If you have a square that's 18 units on each side, you can use a little math magic to find its diagonal. By using the Pythagorean theorem, you'll see that the diagonal of this square would be 18 times the square root of 2. Just remember, there's always a way to find beauty and harmony in even the most geometric of shapes.
Well, isn't that just a happy little question! When you have a square that's 8 feet by 8 feet, you can use the Pythagorean theorem to find the diagonal. Simply square the length of one side (8²), multiply it by 2, and then take the square root of that sum. So, the diagonal dimension of your square would be about 11.31 feet. Just imagine that diagonal stretching across your canvas, bringing a sense of balance and harmony to your artwork.
The area of the square is 18 cm2 The area of a square is: area = side2 By Pythagoras: side2 + side2 = diagonal2 ⇒ 2 side2 = diagonal2 ⇒ side2 = diagonal2 ÷ 2 ⇒ area = diagonal2 ÷ 2 diagonal = 6cm, so: area = (6 cm)2 ÷ 2 ⇒ area = 18 cm2
18-ft x 20-ft = 360 square ft1 square yard = 9 square ft360 square ft = (360/9) = 40 square yards