Q: What is the surface area of 140mm x 120mm x 4mm?

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You neglected to say whether the 4mm is the radius of the circle, or the diameter,or the circumference. Each possibility leads to a different area.

Pie (3.14159...) times (*) 2 times (*) radius === or This equation may be for the area but hopefully it's for circumference. Anyway, the answer to your question is 25.13274123... (Pie times 2 times 4mm).

4/1mm - only decimals can be translated as non-top heavy fractions, if you were asking what 0.4cm is as a fraction it is 4/10 cm or 2/5 cm.

The diameter of a Smartie is 1cm so so r = .005, and its height is 4mm. With negligibly concave ends, the volume of a smartie is pi (5E-3)^2*4E-3 = pi*1E-7 m^3. A 16 oz jar where 1 oz ~ 30 ml, 1 jar ~ 0.5 L = 10cm x 10cm x 4.8cm = 4.8E-4 m^3. Circles pack hexogonally into a square area with an optimal density 1/6 pi root 3 which is approx 0.9069. Figure a random packing is about 10% less than optimal, shaken and settled gives a density more like .82 of the volume. If this is a good assumption, then 0.82 * 4.8E-4 / pi*1E-7 = 1253 smarties / 16 oz jar.

Related questions

140 x 120 x 4 = 67200mm3

127.5

h = 5.9949 m

You neglected to say whether the 4mm is the radius of the circle, or the diameter,or the circumference. Each possibility leads to a different area.

2x(3x5+3x4+4x5) = 94 sq mm

50.265 square mm

A circle with a diameter of 4 mm has an area of : 12.57 mm2

A 4mm diamond measures 4mm in at least one measurement.

4mm is 0.15748032 of an inch.

4mm its in the question

As wide as 4mm on a ruler

1st, it is not a cube, all sides of a cube are equal. 2nd rectangular solids, A = 2lw + 2lh+ 2wh 2x1.5x4 + 2x1.5x10.5 + 2x 1.5x10.5 = 127.5 square mm