A 21mm measurement is roughly equivalent to the diameter of a small coin, such as a quarter or a large button. In terms of visual size, it is about the width of a standard paperclip or slightly larger than the size of a typical fingernail. In Photography, a 21mm lens would provide a wide-angle view, capturing more of the scene than a standard lens. Overall, 21mm is a compact size that can be easily conceptualized with everyday objects.
21mm
346.36 square MM.
There are 10mm in a centimetre. Multiply by 10 and you have your answer in millimetres. This gives you 21mm.
They look like your face!!!
what does a pentogon look like
12x1.5 or 21mm 12x1.5 or 21mm
0.021m
21mm
21MM
27mm x 21mm
21mm
2.1 cm 10mm = 1cm
346.36 square MM.
21mm
when you look at the van from the front the lowest part of the engine is the sump on the botttom of this is the plug (21mm spanner). when underneath the engine the oil filter is to the front of the sump
Use the formula: V= 4/3*pi*r^3 I would convert 21mm to metres straight away. 21mm=0.021m Then apply the formula and you get Vol=0.000038792m^2 to 10 sig figures
21mm equals 2.1cm1cm = 10mm1mm = 0.1cm