Math, asked by gourideshmukh, 2 months ago

ABCD and EFGH are rectangles. Also EG is parallel to sides AB and DC. What is the ratio of area of rectangle ABCD to rectangle EFGH?

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Answered by johnjero2836
1

Answer:

When significant digits are involved, the point is that we are working in the realm of the physical world. Where units of measurement are of the same type and magnitude, the method of measurement is expected to be the same. One has a stick with notches on it, at centimeter intervals. It is at least 10 cm long. Within approximately that range, we can judge the length of something as being “more 4 cm long, than 5 or 3 cm. That that next segment is more likely 7 cm than 8 or 6 cm, and that the 10 cm segment is not 9 or 11 cm.

Once we are butting our measuring stick against the mark we made at 10 cm, to get to a length into the range 11 to 100, the next order of magnitude, our accuracy diminishes, because we combine measurements. If we err, and look at how the segment lines up with four measures of the stick, to, say 45 cm, our measurement can be off by several cm. Thus we can say 40 cm, or 50 cm, but we lack the certainty to say 45 cm.

Keep in mind, too, that, with area, the imprecision does not just add, but multiplies, as both dimensions may be short or long.

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