36=4x9=2x2x3x3, or, if you like, 36=6x6=2x3x2x3
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Prime factorizations are expressions of numbers as products of prime factors. The prime factorization of 30 is 2 x 3 x 5.
10 = 2 × 5
2 x 29 = 58
Rosa is 10. -- further-- This is calculated by working out the relationship between the children. Let's call Rosa "R" and let that stand for her age. The next child is R + 2 years old and the eldest if R + 4. We are told that R + (R + 2) + (R + 4) = 36 (add the Rs and the digits on the left) R + R + R + 2 + 4 = 36 3R + 6 = 36 (subtract 6 from both sides) 3R = 36 - 6 3R = 30 (divide both sides by 3) R = 10According to the information given, Rosa is ten years old.
A circle centre (0, 0) and radius r has equation x² + y² = r² The circle x² + y² = 36 has: r² = 36 → radius = 6