450 years or 4.5 x (times) 100.
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A century is 100 years, so 2 centuries is 200 years.
Long Multiplication 45 x45 1800 ) 45 X 40 = 1800) +225 ( 45 X 5 = 225) ( NB 40 + 5 = 45) 2025 ===== The answer .
1.414. x offset- Straight of 45's
It is: 45*29 = 1305 square cm
45