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Triangular square: 45 = (9 x 10)/2. 2025 is the square of 45, which is also the 9th triangular number. 8. Sum of three squares: 2025 = 40 2 + 20 2 + 5 2 . 2025 can be expressed as the sum of three ...
Do you know the difference between a square and a cube number? Find out the difference between square and cube numbers with this Bitesize KS2 Maths guide.