20 refers to the amplification, 70 mm to the diameter of the main lens or mirror. Note: This diameter is by far the most important piece of information.
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300 mm x 15 cm x 20 mm = (30 x 15 x 2) cubic centimeters, or 900 cc.
The answer will depend on the units. 20 mm x 8 mm is quite a different size from 20 miles x 8 miles.
One cm contains 10 mm. So, 7 x 10 = 70 mm.
5 cm X 10 mm/cm = 50 mm 2 cm X 10 mm/cm = 20 mm 50 mm - 20 mm = 30 mm The answer is 30 mm.
0.20 x 70% = 14% answer = 14%
In units of length, 29 x 20 mm = 580 mm.If the question was intended to ask an area, then 29 mm x 20 mm = 580 square mm.
3.5 x 20= 70
300 mm x 15 cm x 20 mm = (30 x 15 x 2) cubic centimeters, or 900 cc.
The answer will depend on the units. 20 mm x 8 mm is quite a different size from 20 miles x 8 miles.
70 x 20 = 1,400
It is any fraction of the form (70*x)/(20*x) where x is a non-zero integer or where 1/x is a common factor of 70 and 20.
One cm contains 10 mm. So, 7 x 10 = 70 mm.
5 cm X 10 mm/cm = 50 mm 2 cm X 10 mm/cm = 20 mm 50 mm - 20 mm = 30 mm The answer is 30 mm.
2.0 x 20mm is bigger
20 X 10 = 200 mm 1 cm = 10 mm 1 mm = 0.1 cm
3.5 x 20 = 70
0.20 x 70% = 14% answer = 14%