Answer:
0.4 Kilograms of flour
Explanation:
If you convert 400 grams into kilograms (400 ÷ 1,000), you would get 0.4 kilograms.
You get a more low sound.
Conversely, when the wavelength becomes shorter you get a more treble sound.
;-)
Answer:
A ruler.
Explanation:
Just measure height, length and width and multiply each.
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