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Q.

Among the following, which is used as an approximate method to measure area?


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a

Thermometer

b

Graph sheet method

c

Sundial

d

Beam Balance 

answer is B.

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Detailed Solution

The method to find the area of an object is the graph sheet method.
In the graph sheet method, first, you draw an object on the graph sheet by using proper scaling. Then find out the total area of one small square on a graph. Now count the number of such small squares in the graph sheet and multiply the value of one square area by the number of total squares. This will give the correct area value when converting on a large scale.
 
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