There are 2025 rectangles in a 9x9 grid.
(53)2 - (28)2 = (2809 - 784) = 2025sqrt(2025) = 45
A square meter is 100x100 which means there are 10000 sq cm in a sq meter. Your blocks are 450mmx450mm which means that they are 45cm x 45 cm 45x45=2025 10000/2025= 4.94 paving flags. However, you might want to calculate the amount of blocks needed for the entire area you're paving, not for each meter. Always remember to round up and leave yourself some extras, Keep in mind that you may need to leave some gap between the blocks, and that doing so may help you use fewer blocks. For example if you are paving an ally a meter wide, then leaving a gap of three centemeters at the sides of the ally and three centemeters betweed the blocks will mean you get away with using two blocks width and don't need to cut any blocks (which would be a pain in the neck).
45 × 45 = 2025
The square root of 2025 is 45
45
The number is 45
27
3 times of 2025 is 3 * 2025 equalls 6075
45. if you get a calculator and hit the square root button (like a tick) and then key in 2025 = it should give you 45
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A decimal number is simply a way of representing a number in such a way that the place value of each digit is ten times that of the digit to its right. A decimal representation does not require a decimal point. So the required decimal representation is 2025, exactly as in the question.
Starting from the first square number being 1, the 45th is 2025.
2025
2025