there are 10mm in 1cm
so to get from cm to mm you multiply by 10
40(cm)*10 = 400(mm)
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40 cm x 65 cm = 2,600 cm
One foot is exactly 30.48 centimeters. To convert centimeters to feet, you divide by that number.
Volume of cylinder: pi*16*40 = 2010.619 cubic cm to three decimal places
2.54 cm = 1 in (exactly) ⇒ 55 cm x 24 cm x 40 cm = (55 ÷ 2.54) in x (24 ÷ 2.54) in x (40 ÷ 2.54) in ≈ 21.65 in x 9.45 in x 15.75 in
10 mm = 1 cm900 mm = 90 cm800 mm = 80 cm400 mm = 40 cm(900mm x 800mm x 400mm) = (90cm x 80cm x 40cm) = 288,000 cm31 litre = 1,000 cm3.288,000 cm3 = (288,000 / 1,000) = 288 litres