4 m. 40 cm equals 0.4 m.
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20 mm / 40 cm = 2 cm / 40 cm = 2/40 = 1/20 or 0.05
40 cm * 40 cm = 1600 cm2
The centi- prefix means one hundredth → 1 cm = 1/100 m → 40 cm = 40 × 1/100 m = 0.4 m → 52 m 40 cm = 52 m + 0.4 m = 52.4 m
110 cm is larger than 40 inches. To solve, convert to the same units; then they can be compared: 1 in = 2.54 cm (exactly) → 40 in = 40 × 2.54 cm = 101.6 cm < 110 cm → 110 cm is greater than 40 in.
40 dm = 400 cm