It is false that a meter is exactly 3 ft.
1 ft = 0.3048 m (exactly)
→ 1 m = 1/0.3048 ft ≈ 3.28 ft ≈ 3 ft 3.37 in.
3 ft = 3 × 0.3048 = 0.9144 m (exactly)
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True. 111 cm is equal to 1.11 m. This is because there are 100 centimeters in a meter, so to convert centimeters to meters, you divide by 100.
It is not true.
It is false. Water expands on freezing.
False. The SI unit of velocity is meters per second (m/s), not meters per second squared. Meters per second squared is the unit for acceleration.