mm means millimeter which is small unit of measuring length
the lens zooms from 18 toi 55 milimetres.
That number is the focal length of the camera's lens ... which focuses light from the scene to form an image on the 'film' or CCD inside the camera. The longer the focal length of the lens, the larger (nearer) the objects appear to be in the picture. (One radian of angle as seen by the lens ===> One focal length on the film.) On the cameras described in the question, the focal length is given as a range ... "from 18 to 200 mm", and "from 55 to 200 mm". Each of these is a "zoom" lens, whose focal length can be changed over the range, enabling the user to cause objects in the picture to appear somewhat nearer or farther away.
i would advise a 18 55 lens and a 18 70 lens. They are good beginner lenses in low light but i would advise an 18 135, 18 200, 70 300
If you mean "price", check your local camera store. There's no way to quote pricing due to regional markets.
Note that 55% = 0.55. Then, multiply that value by 200 to get:.55 * 200 = 110* * * * *55% OFF of 200 is 200 - 55% = 200 - 110 = 90
55 kg is greater than 18200 g.18 200 g = 18.2 kg < 55 kg
It is: 200-55 = 145
Which camera? A Canon EOS 500D + Lens EF-S IS 18-55 MM costs about 6000 SEK ($900 USD)
110 is 55 percent of 200.
55 * 6o - 200 = 330*o - 200
55/200 = 11/40
18 is 55% of 32.73